JPS4886980A - - Google Patents

Info

Publication number
JPS4886980A
JPS4886980A JP48012108A JP1210873A JPS4886980A JP S4886980 A JPS4886980 A JP S4886980A JP 48012108 A JP48012108 A JP 48012108A JP 1210873 A JP1210873 A JP 1210873A JP S4886980 A JPS4886980 A JP S4886980A
Authority
JP
Japan
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.)
Granted
Application number
JP48012108A
Other languages
Japanese (ja)
Other versions
JPS5725366B2 (US20110105765A1-20110505-C00013.png
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.)
Filing date
Publication date
Application filed filed Critical
Publication of JPS4886980A publication Critical patent/JPS4886980A/ja
Publication of JPS5725366B2 publication Critical patent/JPS5725366B2/ja
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/04—Discharging the shaped articles
    • B28B13/06—Removing the shaped articles from moulds
    • 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
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/42—Casting under special conditions, e.g. vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/06—Moulds with flexible parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/10—Moulds with means incorporated therein, or carried thereby, for ejecting or detaching the moulded article
    • B28B7/12—Moulds with means incorporated therein, or carried thereby, for ejecting or detaching the moulded article by fluid pressure, e.g. acting through flexible wall parts or linings of the moulds
    • 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
    • B29C33/0038—Moulds or cores; Details thereof or accessories therefor with sealing means or the like
    • 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
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • B29C33/40—Plastics, e.g. foam or rubber
    • 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
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/46—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles using fluid pressure
    • 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
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/48—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling
    • B29C33/50—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling elastic or flexible
    • 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
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • 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
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/26—Moulds or cores
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/3642—Bags, bleeder sheets or cauls for isostatic pressing
    • B29C2043/3652—Elastic moulds or mould parts, e.g. cores or inserts
    • 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
    • B29C33/0033—Moulds or cores; Details thereof or accessories therefor constructed for making articles provided with holes
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2891/00—Use of waxes as mould material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/709—Articles shaped in a closed loop, e.g. conveyor belts
    • B29L2031/7096—Rings or ring-like articles
    • B29L2031/7102—Toroidal articles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/044—Rubber mold
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/058—Undercut

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
JP1210873A 1972-01-31 1973-01-31 Expired JPS5725366B2 (US20110105765A1-20110505-C00013.png)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22214172A 1972-01-31 1972-01-31

Publications (2)

Publication Number Publication Date
JPS4886980A true JPS4886980A (US20110105765A1-20110505-C00013.png) 1973-11-16
JPS5725366B2 JPS5725366B2 (US20110105765A1-20110505-C00013.png) 1982-05-29

Family

ID=22831025

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1210873A Expired JPS5725366B2 (US20110105765A1-20110505-C00013.png) 1972-01-31 1973-01-31

Country Status (14)

Country Link
US (1) US3776683A (US20110105765A1-20110505-C00013.png)
JP (1) JPS5725366B2 (US20110105765A1-20110505-C00013.png)
KR (1) KR780000334B1 (US20110105765A1-20110505-C00013.png)
AT (1) AT321178B (US20110105765A1-20110505-C00013.png)
AU (1) AU476649B2 (US20110105765A1-20110505-C00013.png)
BE (1) BE794780A (US20110105765A1-20110505-C00013.png)
CA (1) CA1024309A (US20110105765A1-20110505-C00013.png)
DE (1) DE2303899C2 (US20110105765A1-20110505-C00013.png)
FR (2) FR2170002B1 (US20110105765A1-20110505-C00013.png)
GB (2) GB1414291A (US20110105765A1-20110505-C00013.png)
IE (1) IE39307B1 (US20110105765A1-20110505-C00013.png)
IT (1) IT977150B (US20110105765A1-20110505-C00013.png)
NL (1) NL166206C (US20110105765A1-20110505-C00013.png)
SE (2) SE396196B (US20110105765A1-20110505-C00013.png)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51116U (US20110105765A1-20110505-C00013.png) * 1974-06-20 1976-01-05
JPS62134707U (US20110105765A1-20110505-C00013.png) * 1985-10-19 1987-08-25

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3966165A (en) * 1974-12-04 1976-06-29 The Quaker Oats Company Composite flexible mold
US3934809A (en) * 1974-12-04 1976-01-27 The Quaker Oats Company Slitted flexible mold
US3934810A (en) * 1974-12-04 1976-01-27 The Quaker Oats Company Flexible mold
US3937438A (en) * 1974-12-04 1976-02-10 The Quaker Oats Company Flexible mold with hinged slits
US3982721A (en) * 1975-01-20 1976-09-28 Precision Flexmold, Inc. Molding apparatus including a one-piece flexible mold deformable by fluid pressure differential
US4045153A (en) * 1975-01-20 1977-08-30 Precision Flexmold, Inc. Molding apparatus including one-piece flexible mold and means to restrict the deformation of the mold
US3980269A (en) * 1975-01-20 1976-09-14 Precision Flexmold, Inc. Molding apparatus including a one-piece flexible mold having male and female forming members
US4027845A (en) * 1975-04-28 1977-06-07 Precision Flexmold, Inc. Flexible mold including rigid encapsulated mandrel
US3998422A (en) * 1975-04-28 1976-12-21 Precision Flexmold, Inc. Flexible mold having internal seams
US4045535A (en) * 1975-10-28 1977-08-30 Resment Inc. Method of casting compositions in elastomeric molds
EP0000755B1 (de) * 1977-08-05 1981-12-16 Walter Schwarz Verfahren zur Herstellung von Formkörpern aus verstärktem Kunststoff und Vorrichtung zur Durchführung des Verfahrens
US4201360A (en) * 1978-01-27 1980-05-06 Packer Plastics, Inc. Injection molding of embossed articles
SE7807073L (sv) * 1978-06-21 1979-12-22 Lkb Produkter Ab Gjutform for gjutning av preparatblock avsedda for snittning vid mikrotomi eller ultramikrotomi
FR2432924A1 (fr) * 1978-08-11 1980-03-07 Solis Joseph Dispositif pour mouler des volumes a empreinte continue et recuperable
FR2443324A1 (fr) * 1978-12-04 1980-07-04 Bertin & Cie Dispositif permettant le moulage et le demoulage de produits divers
GB2144366A (en) * 1983-07-30 1985-03-06 Parke Davis & Co Casting mould for specimen bodies
NL8304335A (nl) * 1983-12-16 1985-07-16 Ir George Gustaaf Veldhoen Werkwijze voor het in een gietmal uit een verhardbaar materiaal vormen van lichamen, in het bijzonder van met ribben uitgevoerde lichamen, zoals open of eenzijdig gesloten roosters; alsmede gietmal ingericht voor het toepassen van deze werkwijze.
GB8406425D0 (en) * 1984-03-12 1984-04-18 Stanton & Staveley Ltd Production of concrete products
CH664525A5 (de) * 1985-10-10 1988-03-15 Uniport Theodor Hirzel Verfahren und vorrichtung zum vergiessen von insbesondere kunststoff- und kunstharzbeton oder -moertel-formmassen.
JPS6289983A (ja) * 1985-10-16 1987-04-24 日本電気硝子株式会社 歯牙模型
JPS62103081U (US20110105765A1-20110505-C00013.png) * 1985-12-16 1987-07-01
FR2643853B1 (fr) * 1989-03-02 1991-05-10 Caoutchouc Manuf Plastique Procede de formage des extremites de tubes de caoutchouc au cours de la vulcanisation sur mandrin et outillage deformable pour realiser cette operation
US5182313A (en) * 1992-01-09 1993-01-26 Scott Carson Method and apparatus for forming articles made of polyurethane
US5667744A (en) * 1992-12-22 1997-09-16 Focal Point Products, Inc. Method for fabricating columns
US5340512A (en) * 1993-01-29 1994-08-23 Thomas & Betts Corporation Polymer concrete electrical insulator and method and apparatus for making
US5456586A (en) 1993-07-07 1995-10-10 Carson; Scott Apparatus for manufacturing articles made of polyurethane
US5639416A (en) * 1994-11-18 1997-06-17 Motorola, Inc. Method of molding precision parts
US6077462A (en) * 1998-02-20 2000-06-20 3M Innovative Properties Company Method and apparatus for seamless microreplication using an expandable mold
US6533985B1 (en) 2000-09-22 2003-03-18 Washington State University Research Foundation Methods and apparatus for molding composite materials
FR2876311B1 (fr) * 2004-10-07 2014-11-21 Lib Ind Procede et moule pour la fabrication de pieces en beton ou en platre
US20070096369A1 (en) * 2005-11-01 2007-05-03 Fox Stone, Inc. Methods and apparatus for the separation of molded products from flexible mold pieces
US20100007064A1 (en) * 2006-04-10 2010-01-14 Ashton Clint H Apparatus and method for manufacturing hollow tubular members
DE102008062477B3 (de) * 2008-12-16 2010-03-25 Airbus Deutschland Gmbh Verfahren, System und Formwerkzeug zum Herstellen von Bauteilen aus Faserverbundwerkstoffen
US20140048977A1 (en) * 2012-08-17 2014-02-20 Autonomic Technologies, Inc. Molding of a neurostimulator for delivery into the pterygopalatine fossa
US9878469B2 (en) 2013-09-10 2018-01-30 Rsi Home Products Management, Inc. Mold
US10145093B2 (en) * 2015-06-09 2018-12-04 Rsi Home Products Management, Inc. Mold
CN108698285A (zh) 2016-01-19 2018-10-23 哈佛学院院长及董事 软体机器人致动器以及夹持器

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3353220A (en) * 1964-01-28 1967-11-21 Lenoble Raymond Flexible mold for molding a frame onto a pane

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1981968A (en) * 1930-07-14 1934-11-27 Joseph C Patrick Electrical conductor
US2124871A (en) * 1933-12-09 1938-07-26 American Anode Inc Method and apparatus for molding articles
US2092001A (en) * 1935-06-27 1937-09-07 Gen Motors Corp Method of making ceramic products
US2337036A (en) * 1938-10-22 1943-12-21 Dental Res Corp Resilient mold
US2596021A (en) * 1950-04-08 1952-05-06 Gen Motors Corp Refrigerating apparatus
DE232263C (US20110105765A1-20110505-C00013.png) * 1957-07-25
US3121267A (en) * 1960-12-08 1964-02-18 Malleable Res And Dev Foundati Pattern-insert-receiving pocket and pattern-insert
US3136831A (en) * 1961-07-14 1964-06-09 United Aircraft Corp Casting method
US3608055A (en) * 1968-12-09 1971-09-21 Continental Can Co Method of shaping plastic sheet material
US3594877A (en) * 1969-10-24 1971-07-27 Yuken Kogyo Co Ltd Apparatus for manufacturing ceramic articles
US3576930A (en) * 1970-04-20 1971-04-27 Goodyear Tire & Rubber Method of preparing molded articles

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3353220A (en) * 1964-01-28 1967-11-21 Lenoble Raymond Flexible mold for molding a frame onto a pane

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51116U (US20110105765A1-20110505-C00013.png) * 1974-06-20 1976-01-05
JPS5637888Y2 (US20110105765A1-20110505-C00013.png) * 1974-06-20 1981-09-04
JPS62134707U (US20110105765A1-20110505-C00013.png) * 1985-10-19 1987-08-25
JPH0532264Y2 (US20110105765A1-20110505-C00013.png) * 1985-10-19 1993-08-18

Also Published As

Publication number Publication date
NL166206B (nl) 1981-02-16
SE396197B (sv) 1977-09-12
DE2303899A1 (de) 1973-08-09
NL166206C (nl) 1981-07-15
SE7609101L (sv) 1976-08-13
KR780000334B1 (en) 1978-09-11
AU5161273A (en) 1974-08-01
IE39307B1 (en) 1978-09-13
FR2170002A1 (US20110105765A1-20110505-C00013.png) 1973-09-14
BE794780A (fr) 1973-05-16
GB1412062A (en) 1975-10-29
DE2303899C2 (de) 1983-12-15
FR2170002B1 (US20110105765A1-20110505-C00013.png) 1974-05-17
US3776683A (en) 1973-12-04
CA1024309A (en) 1978-01-17
IE39307L (en) 1973-07-31
JPS5725366B2 (US20110105765A1-20110505-C00013.png) 1982-05-29
AT321178B (de) 1975-03-25
NL7301411A (US20110105765A1-20110505-C00013.png) 1973-08-02
IT977150B (it) 1974-09-10
FR2195935A5 (US20110105765A1-20110505-C00013.png) 1974-03-08
GB1414291A (en) 1975-11-19
AU476649B2 (en) 1976-09-30
SE396196B (sv) 1977-09-12

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