GB1306621A

GB1306621A – Apparatus for the production of transversely profiled pipes
– Google Patents

GB1306621A – Apparatus for the production of transversely profiled pipes
– Google Patents
Apparatus for the production of transversely profiled pipes

Info

Publication number
GB1306621A

GB1306621A
GB1214571*[A
GB1214571A
GB1306621A
GB 1306621 A
GB1306621 A
GB 1306621A

GB 1214571 A
GB1214571 A
GB 1214571A
GB 1306621 A
GB1306621 A
GB 1306621A
Authority
GB
United Kingdom
Prior art keywords
halves
mould
members
moulding
rollers
Prior art date
1970-12-11
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Expired

Application number
GB1214571*[A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Individual

Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1970-12-11
Filing date
1971-04-29
Publication date
1973-02-14

1971-04-29
Application filed by Individual
filed
Critical
Individual

1973-02-14
Publication of GB1306621A
publication
Critical
patent/GB1306621A/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

Classifications

B—PERFORMING OPERATIONS; TRANSPORTING

B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL

B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING

B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor

B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes

B29C49/0021—Making articles of indefinite length, e.g. corrugated tubes using moulds or mould parts movable in a closed path, e.g. mounted on movable endless supports

B—PERFORMING OPERATIONS; TRANSPORTING

B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL

B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING

B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor

B29C35/16—Cooling

B29C2035/1658—Cooling using gas

B—PERFORMING OPERATIONS; TRANSPORTING

B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL

B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING

B29C2791/00—Shaping characteristics in general

B29C2791/004—Shaping under special conditions

B29C2791/006—Using vacuum

B—PERFORMING OPERATIONS; TRANSPORTING

B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL

B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING

B29C33/00—Moulds or cores; Details thereof or accessories therefor

B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means

B—PERFORMING OPERATIONS; TRANSPORTING

B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL

B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING

B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor

B29C35/16—Cooling

B—PERFORMING OPERATIONS; TRANSPORTING

B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL

B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING

B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor

B29C49/42—Component parts, details or accessories; Auxiliary operations

B29C49/48—Moulds

B29C49/4823—Moulds with incorporated heating or cooling means

Abstract

1306621 Moulding corrugated pipe W HEGLER 29 April 1971 [11 Dec 1970] 12145/71 Heading B5A Apparatus for the production of plastics pipes having annular or helical corrugations comprises an extruder 10 feeding plastics pipe to a series of end-to-end abutting moulds moving in a straight moulding path 3, each mould being comprised by mould halves 1 which circulate in closed paths and come together after being conveyed around semicircular arcs having their centres of curvature at 2. The halves are so conducted that the leading corner 4 of each half travels along an arc 6 whereas the trailing corner 5 travels along a larger arc 7. The corrugations are formed by pressure applied to the inside of the tube forcing it into contact with the mould walls, or a negative pressure is provided between the tube and mould walls. As shown in Fig. 2, the halves are interconnected by links 12 and pins 11 and are driven by a pinion 19 over a base-plate 35. The pinion engages teeth on the upper sides of the halves whereby they are urged together and pushed along the moulding path 3 and then pulled around stationary roller-shaped return members and return paths 14 before engaging similar stationary members 13. The links 12 engage the halves towards their leading ends and the back of each mould half has curved recesses 15 which engage upper and lower flanges of the members 13 whereby the halves are tilted forward as they pass around the members. Each of the latter carry two rollers 18 which engage further recesses 17 in the backs of the halves urging opposed mould halves together. Press-on rollers 21 on both sides of the path 3 keep the halves together; the rollers on one side are mounted in a fixed guide-rail 22 and those on the other on a spring-urged guide rail 23. Means are provided for stopping the machine should mould halves become separated during the moulding stage. At the end of the latter, opposing halves are separated by a wedge. To prevent the halves tilting on the base-plate the links 12 may be a close fit in recesses in the backs of the halves. Passages may be provided in the base-plate and mould halves for the flow of coolant under a negative pressure corresponding to that applied to the mould interior.

GB1214571*[A
1970-12-11
1971-04-29
Apparatus for the production of transversely profiled pipes

Expired

GB1306621A
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

DE2061027A

DE2061027C3
(en)

1970-12-11
1970-12-11

Device for applying a transverse profile to a pipe made of thermoplastic material

Publications (1)

Publication Number
Publication Date

GB1306621A
true

GB1306621A
(en)

1973-02-14

Family
ID=5790689
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB1214571*[A
Expired

GB1306621A
(en)

1970-12-11
1971-04-29
Apparatus for the production of transversely profiled pipes

Country Status (27)

Country
Link

US
(1)

US3776679A
(en)

JP
(1)

JPS5523738B1
(en)

AR
(1)

AR198478A1
(en)

AT
(1)

AT349206B
(en)

BE
(1)

BE771527A
(en)

BG
(1)

BG19098A3
(en)

CA
(1)

CA957464A
(en)

CH
(1)

CH538925A
(en)

CS
(1)

CS168568B2
(en)

DE
(1)

DE2061027C3
(en)

DK
(1)

DK130880B
(en)

EG
(1)

EG10441A
(en)

FI
(1)

FI53938C
(en)

FR
(2)

FR2117838B1
(en)

GB
(1)

GB1306621A
(en)

HU
(1)

HU162252B
(en)

IE
(1)

IE36103B1
(en)

IL
(1)

IL36889A
(en)

NL
(1)

NL165103C
(en)

NO
(1)

NO135206C
(en)

PL
(1)

PL99130B1
(en)

RO
(1)

RO81463B
(en)

SE
(2)

SE397656B
(en)

SU
(2)

SU507209A3
(en)

TR
(1)

TR17485A
(en)

YU
(1)

YU33652B
(en)

ZA
(1)

ZA713897B
(en)

Families Citing this family (53)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

GB1429927A
(en)

*

1972-03-10
1976-03-31
Garlick T W
Continuous casting of anodes

DE2501044B2
(en)

*

1975-01-13
1980-01-10
Fraenkische Isolierrohr- & Metallwaren-Werke, Gebr. Kirchner, 8729 Koenigsberg

Device for manufacturing corrugated pipes made of thermoplastic material

US4116603A
(en)

*

1975-07-04
1978-09-26
Aktiebolaget Carl Munters
Apparatus for corrugating a web of sheet material

DE2637995C2
(en)

*

1976-08-24
1983-05-26
Hegler, Wilhelm, 8730 Bad Kissingen

Process for the production of double-walled plastic pipes with an annularly corrugated outer wall and a smooth inner wall

DE2832350A1
(en)

*

1978-07-22
1980-01-31
Wilhelm Hegler

DEVICE FOR PRODUCING PIPES FROM THERMOPLASTIC PLASTIC WITH CROSS-PROFILING

DE2933304A1
(en)

*

1979-08-17
1981-04-02
Hegler, Wilhelm, 8730 Bad Kissingen

IRRIGATION HOSE AND METHOD AND DEVICE FOR PRODUCING IT

DE3027045A1
(en)

*

1980-07-17
1982-02-11
Hegler, Wilhelm, 8730 Bad Kissingen

FLAT-HOLLOW BODY, ESPECIALLY VENTILATION AND DRAINAGE OR ABSORBER PLATE

DE3118932C3
(en)

*

1981-05-13
1995-02-09
Wilhelm Hegler

Device for the production of plastic pipes with transverse grooves

DE3120480A1
(en)

*

1981-05-22
1982-12-09
Hegler, Wilhelm, 8730 Bad Kissingen

DEVICE FOR PRODUCING PLASTIC PIPES WITH CROSS-GROOVE

EP0067472B1
(en)

*

1981-06-11
1985-04-10
Wavin B.V.
Method and device for cooling moulds

DE3279862D1
(en)

*

1981-06-15
1989-09-14
Wavin Bv
Apparatus for making profiled plastics tube

US4439130A
(en)

*

1981-11-23
1984-03-27
Cullom Machine Tool & Die, Inc.
Plastic tile corrugator

DE3335850C2
(en)

*

1983-10-03
1986-11-06
Fränkische Rohrwerke Gebrüder Kirchner GmbH & Co, 8729 Königsberg

Device for manufacturing plastic pipes

FI73385C
(en)

*

1986-03-24
1987-10-09
Uponor Nv

Method and apparatus for making pipes.

DE3610667A1
(en)

*

1986-03-29
1987-10-01
Wilhelm Hegler

DOUBLE TUBE CONSISTING OF TWO ONE-PIECE PROTECTIVE TUBES CONNECTED TO A BRIDGE

US4681526A
(en)

*

1986-04-09
1987-07-21
Lupke Manfred Arno Alfred
Apparatus for molding thermoplastic pipes

EP0270694B1
(en)

*

1986-11-13
1990-11-28
UNICOR GmbH Rahn Plastmaschinen
Apparatus for the continuous production of pipes with an irregular cross-section

DE3725286A1
(en)

*

1987-07-30
1989-02-09
Wilhelm Hegler

METHOD AND DEVICE FOR PRODUCING A RIB TUBE FROM PLASTIC

US4911633A
(en)

*

1988-08-15
1990-03-27
Comfort Gordon A
Apparatus for plastic tubing manufacture

JPH02125715A
(en)

*

1988-11-04
1990-05-14
Mirai Ind Co Ltd
Cooling structure of mold in extrusion molding device for continuous resin molded product

DE3930318C1
(en)

*

1989-09-11
1990-05-17
Fraenkische Rohrwerke Gebr. Kirchner Gmbh & Co, 8729 Koenigsberg, De

DE4139696C1
(en)

*

1991-12-02
1993-01-28
Fraenkische Rohrwerke Gebr. Kirchner Gmbh & Co, 8729 Koenigsberg, De

US5257924A
(en)

*

1992-06-19
1993-11-02
Cullom Machine Tool & Die, Inc.
Plastic tile corrugator

DE4224514A1
(en)

*

1992-07-24
1994-01-27
Wilhelm Hegler

Device for producing a plastic tube with cross-profiling

US5489201A
(en)

*

1993-04-15
1996-02-06
Cullom Machine Tool & Die, Inc.
Plastic tile corrugator and mold blocks

US5545369A
(en)

*

1993-09-08
1996-08-13
Corma, Inc.
Clamshell corrugators and the like

DE4414977A1
(en)

*

1994-04-29
1995-11-02
Wilhelm Hegler

Device for the production of pipes made of thermoplastic material with cross-profiling

US5582849A
(en)

*

1994-05-06
1996-12-10
Lupke; Manfred A. A.
Travelling mold with mold block carriers

US5573787A
(en)

*

1995-09-28
1996-11-12
Lupke; Manfred A. A.
Mold apparatus with cooling channels

AU2390197A
(en)

1996-04-29
1997-11-19
Conenor Oy
Extrusion method, extruder and extruded product

FR2748417B1
(en)

*

1996-05-09
1998-06-12
Corelco

PLANT FOR THE MANUFACTURE BY LOW PRESSURE OF TUBULAR BODIES OF SYNTHETIC MATERIAL

DE19701970A1
(en)

*

1997-01-22
1998-07-23
Ralph Peter Dr Ing Hegler

Method and device for producing an enveloping corrugated tube with a line located therein

DE19702647C1
(en)

*

1997-01-25
1998-02-26
Unicor Rohrsysteme Gmbh
Corrugated tubing moulding unit having jaws with vacuum and coolant connections

US6054089A
(en)

*

1997-03-12
2000-04-25
Lupke; Manfred A. A.
Method and apparatus of cooling product within a mold

DE19845321C2
(en)

*

1998-10-01
2002-03-28
Unitec Gmbh Tech Entwicklungen

Device for the production of thin-walled smooth plastic pipes with corrugated sections at different distances from each other

US6193919B1
(en)

*

1998-12-31
2001-02-27
Wayne H. Ford
Method and apparatus for extruding shaped products from recycled plastic materials

US6719942B1
(en)

*

1999-09-08
2004-04-13
David A. Triplett
Method and apparatus for production of tubing

DE10148294C1
(en)

*

2001-09-29
2003-01-16
Unicor Rohrsysteme Gmbh
Mold half for corrugator, for producing ribbed conduits, has semi-cylindrical inner surface, fittings with concave inner surface alternating with fittings with convex inner surface being fitted on it

DE10152638A1
(en)

*

2001-10-16
2003-04-24
Ralph Peter Hegler

Device for the production of corrugated plastic pipes

DE10257365B3
(en)

*

2002-12-09
2004-06-03
Unicor Gmbh Rahn Plastmaschinen
Assembly for the production of corrugated pipes, with lateral ribs, has facing half-molds traveling on continuous loop paths with compensation units at the deflection points for smooth movements

DE20219027U1
(en)

*

2002-12-09
2003-02-27
Unicor Rohrsysteme Gmbh

Device for the production of transverse finned tubes

DE10257364B3
(en)

*

2002-12-09
2004-06-03
Unicor Gmbh Rahn Plastmaschinen
Assembly for the production of corrugated pipes, with lateral ribs, has facing half-molds traveling on continuous paths with structured guides at the deflection points for smooth movements

DE102004040019B4
(en)

*

2004-08-18
2011-06-22
Drossbach GmbH & Co. KG, 86641

Apparatus for producing corrugated pipes

EP1851775A1
(en)

*

2005-02-14
2007-11-07
Panduit Corporation
Enhanced communication cable systems and methods

CN102785319B
(en)

2005-11-16
2014-12-17
制造系统有限公司
Improvement of forming device or improvement relating to forming device

DE102007049655B4
(en)

*

2007-10-12
2009-09-17
Unicor Gmbh

Corrugator device with demoulding device

DE202008017832U1
(en)

*

2008-04-28
2010-09-23
Maintools Gmbh & Co.Kg

Shaping device, in particular corrugator, for producing profiled plastic pipes

US7942176B1
(en)

*

2008-05-27
2011-05-17
Drum Workshop, Inc.
Drum shell formation

AU2009302979B2
(en)

2008-10-07
2016-09-15
Manufacturing Systems Limited
Forming methods

US8808610B2
(en)

*

2009-04-01
2014-08-19
Patrick E. Scharf
Systems and methods for cooling moving molds

CA2852557C
(en)

*

2014-05-20
2022-04-05
Manfred A. A. Lupke
System and method for identifying thermal expansion issues in a corrugator

CN104960163B
(en)

*

2015-07-16
2017-12-19
绍兴柯桥日臻化纤有限公司
A kind of single distortion pipe Double-linkage space path core-pulling mechanism

EP3915380A1
(en)

*

2020-05-28
2021-12-01
Leeo Tech AG
Device and method for preparing a raw dough product

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* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US1139889A
(en)

*

1915-02-02
1915-05-18
Continuous Casting Corp
Guide for continuous casting-machines.

US2091348A
(en)

*

1933-11-24
1937-08-31
Du Pont
Machine for the continuous casting of metal sheets

BE495105A
(en)

*

1949-12-21
1900-01-01

FR61855E
(en)

*

1949-12-21
1955-05-18
Pirelli

Process and machine for the manufacture of plastic hollow bodies

US2866230A
(en)

*

1956-02-24
1958-12-30
Pullman Vacuum Cleaner Corp
Corrugated rubber tubing and its production

FR1413172A
(en)

*

1959-02-21
1965-10-08
Fraenk Isolierrohr & Metall

Device for manufacturing plastic pipes with transverse corrugated walls

US3035302A
(en)

*

1959-03-11
1962-05-22
Lysobey John
Extrusion and forming of plastic tubing

DE1875742U
(en)

*

1960-03-05
1963-07-18
Wilhelm Hegler

DEVICE FOR MANUFACTURING PLASTIC PIPES WITH LATERAL GROOVES.

AT253762B
(en)

*

1960-12-20
1967-04-25
Bonum Werk Ges M B H

Device for the continuous production of transverse grooves, bulges or the like on a tube made of thermoplastic material

AT234365B
(en)

*

1961-12-15
1964-06-25
Heinz Faigle

Device for the continuous production of tubes with a wave-shaped bulging wall

DE1181392B
(en)

*

1962-05-12
1964-11-12
Reifenhaeuser Kg

Device for the continuous production of a cross-grooved, flexible pipe made of thermoplastic material

DE1242848B
(en)

*

1963-09-21
1967-06-22
Wilhelm Hegler

Device for producing pipes with transverse grooves made of thermoplastic material

GB1055668A
(en)

*

1964-03-13
1967-01-18
Baker Perkins Granbull Ltd
Improvements relating to the production of tubing

US3286305A
(en)

*

1964-09-03
1966-11-22
Rexall Drug Chemical
Apparatus for continuous manufacture of hollow articles

DE1931338U
(en)

*

1965-06-18
1966-01-20
Rainer Isolierrohr Drossbach

DEVICE FOR MANUFACTURING CROSS-PROFILED DRAINAGE TUBES.

1970

1970-12-11
DE
DE2061027A
patent/DE2061027C3/en
not_active
Expired

1971

1971-04-07
AT
AT297871A
patent/AT349206B/en
not_active
IP Right Cessation

1971-04-08
US
US00132471A
patent/US3776679A/en
not_active
Expired – Lifetime

1971-04-14
BG
BG17334A
patent/BG19098A3/xx
unknown

1971-04-14
YU
YU928/71A
patent/YU33652B/en
unknown

1971-04-29
GB
GB1214571*[A
patent/GB1306621A/en
not_active
Expired

1971-04-29
AR
AR235298A
patent/AR198478A1/en
active

1971-05-03
SE
SE7311921A
patent/SE397656B/en
unknown

1971-05-03
SE
SE05705/71A
patent/SE368168B/xx
unknown

1971-05-03
FI
FI1218/71A
patent/FI53938C/en
active

1971-05-04
CH
CH660871A
patent/CH538925A/en
not_active
IP Right Cessation

1971-05-05
SU
SU1665239A
patent/SU507209A3/en
active

1971-05-19
IE
IE631/71A
patent/IE36103B1/en
unknown

1971-05-19
EG
EG210/71*UA
patent/EG10441A/en
active

1971-05-20
IL
IL36889A
patent/IL36889A/en
unknown

1971-05-25
DK
DK253171AA
patent/DK130880B/en
not_active
IP Right Cessation

1971-06-04
NL
NL7107682.A
patent/NL165103C/en
not_active
IP Right Cessation

1971-06-08
HU
HUHE590A
patent/HU162252B/hu
unknown

1971-06-15
ZA
ZA713897A
patent/ZA713897B/en
unknown

1971-06-16
RO
RO67313A
patent/RO81463B/en
unknown

1971-07-01
TR
TR17485A
patent/TR17485A/en
unknown

1971-07-12
NO
NO2673/71A
patent/NO135206C/no
unknown

1971-08-02
JP
JP5820671A
patent/JPS5523738B1/ja
active
Pending

1971-08-02
FR
FR7128833A
patent/FR2117838B1/fr
not_active
Expired

1971-08-13
CA
CA12050918-3A
patent/CA957464A/en
not_active
Expired

1971-08-17
PL
PL1971150064A
patent/PL99130B1/en
unknown

1971-08-19
BE
BE771527A
patent/BE771527A/en
unknown

1971-09-22
CS
CS6744A
patent/CS168568B2/cs
unknown

1974

1974-05-29
SU
SU2028394A
patent/SU538655A3/en
active

1974-10-24
FR
FR7439573A
patent/FR2246371B1/fr
not_active
Expired

Also Published As

Publication number
Publication date

JPS5523738B1
(en)

1980-06-25

IL36889A
(en)

1974-07-31

IL36889A0
(en)

1971-07-28

ATA297871A
(en)

1976-06-15

FI53938B
(en)

1978-05-31

US3776679A
(en)

1973-12-04

HU162252B
(en)

1973-01-29

DE2061027A1
(en)

1972-06-22

NL7107682A
(en)

1972-06-13

YU33652B
(en)

1977-12-31

DE2061027B2
(en)

1976-03-25

SU507209A3
(en)

1976-03-15

FI53938C
(en)

1978-09-11

CH538925A
(en)

1973-07-15

DK130880C
(en)

1975-09-29

DK130880B
(en)

1975-04-28

NO135206C
(en)

1977-03-09

FR2117838A1
(en)

1972-07-28

SE368168B
(en)

1974-06-24

NL165103B
(en)

1980-10-15

BG19098A3
(en)

1975-04-30

AR198478A1
(en)

1974-06-28

FR2246371A1
(en)

1975-05-02

RO81463B
(en)

1983-04-30

RO81463A
(en)

1983-04-29

PL99130B1
(en)

1978-06-30

FR2117838B1
(en)

1975-07-11

IE36103L
(en)

1972-06-11

ZA713897B
(en)

1972-02-23

CS168568B2
(en)

1976-06-29

IE36103B1
(en)

1976-08-18

BE771527A
(en)

1971-12-31

CA957464A
(en)

1974-11-12

DE2061027C3
(en)

1982-03-04

NO135206B
(en)

1976-11-22

EG10441A
(en)

1976-01-31

TR17485A
(en)

1975-07-23

AT349206B
(en)

1979-03-26

SU538655A3
(en)

1976-12-05

YU92871A
(en)

1977-06-30

SE397656B
(en)

1977-11-14

NL165103C
(en)

1981-03-16

FR2246371B1
(en)

1980-02-08

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Legal Events

Date
Code
Title
Description

1973-06-27
PS
Patent sealed [section 19, patents act 1949]

1983-12-14
PCNP
Patent ceased through non-payment of renewal fee

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