SE7908591L - Rorforbindningsdel eller dylikt samt forfarande och verktyg for dess framstellning - Google Patents
Rorforbindningsdel eller dylikt samt forfarande och verktyg for dess framstellningInfo
- Publication number
- SE7908591L SE7908591L SE7908591A SE7908591A SE7908591L SE 7908591 L SE7908591 L SE 7908591L SE 7908591 A SE7908591 A SE 7908591A SE 7908591 A SE7908591 A SE 7908591A SE 7908591 L SE7908591 L SE 7908591L
- Authority
- SE
- Sweden
- Prior art keywords
- seal
- recess
- tools
- procedures
- fitting
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/06—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end
- F16L47/08—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end with sealing rings arranged between the outer surface of one pipe end and the inner surface of the sleeve or socket, the sealing rings being placed previously in the sleeve or socket
-
- 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
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
- B28B21/563—Gaskets
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1635—Making multilayered or multicoloured articles using displaceable mould parts, e.g. retractable partition between adjacent mould cavities
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1676—Making multilayered or multicoloured articles using a soft material and a rigid material, e.g. making articles with a sealing part
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/0053—Producing sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L17/00—Joints with packing adapted to sealing by fluid pressure
- F16L17/02—Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between outer surface of pipe and inner surface of sleeve or socket
- F16L17/03—Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between outer surface of pipe and inner surface of sleeve or socket having annular axial lips
- F16L17/035—Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between outer surface of pipe and inner surface of sleeve or socket having annular axial lips the sealing rings having two lips parallel to each other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/06—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end
- F16L47/12—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end with additional locking means
-
- 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
- B29L2031/24—Pipe joints or couplings
-
- 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
- B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints
-
- 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
- B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints
- B29L2031/265—Packings, Gaskets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Fluid Mechanics (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Drying Of Solid Materials (AREA)
- External Artificial Organs (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782845308 DE2845308C3 (de) | 1978-10-18 | 1978-10-18 | Fitting oder dergleichen aus formstabilem Kunststoff für Rohrverbindungen sowie Verfahren und Werkzeug zu seiner Herstellung |
DE19792936016 DE2936016C2 (de) | 1979-09-06 | 1979-09-06 | Fitting o.dgl. aus formstabilem Kunststoff für Rohrverbindungen und Werkzeug zu seiner Herstellung |
Publications (1)
Publication Number | Publication Date |
---|---|
SE7908591L true SE7908591L (sv) | 1980-04-19 |
Family
ID=25776137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7908591A SE7908591L (sv) | 1978-10-18 | 1979-10-17 | Rorforbindningsdel eller dylikt samt forfarande och verktyg for dess framstellning |
Country Status (11)
Country | Link |
---|---|
US (2) | US4410479A (sv) |
AT (1) | AT378498B (sv) |
AU (1) | AU532018B2 (sv) |
BR (1) | BR7906682A (sv) |
CH (1) | CH643047A5 (sv) |
FR (1) | FR2439077A1 (sv) |
GB (1) | GB2035192B (sv) |
IT (1) | IT1123805B (sv) |
NL (1) | NL7907705A (sv) |
NO (1) | NO793248L (sv) |
SE (1) | SE7908591L (sv) |
Families Citing this family (68)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7909293A (nl) * | 1979-12-21 | 1981-07-16 | Wavin Bv | Werkwijze voor het aanbrengen van een afdichtlichaam in een groef van een mof. |
ATE5386T1 (de) * | 1980-03-25 | 1983-12-15 | Hawo B.V. | Verfahren und vorrichtung zum herstellen eines rohrfoermigen koerpers mit einem dichtungsring. |
DE3141878C1 (de) * | 1981-10-22 | 1983-04-14 | Hans Grohe Gmbh & Co Kg, 7622 Schiltach | "Dichtungsring für Badewannenablaufventile" |
WO1984000278A1 (en) * | 1982-07-16 | 1984-02-02 | Space Management Pty Ltd | Fence construction |
NO171288C (no) * | 1985-01-14 | 1993-02-17 | Wavin Bv | Fremgangsmaate og form til fremstilling av et pakningselement |
ES2020276B3 (es) * | 1986-07-18 | 1991-08-01 | Wavin Bv | Acoplamientos para conductos |
GB2192578B (en) * | 1986-07-18 | 1990-02-14 | Wavin Bv | Pipe couplings |
GB2192577B (en) * | 1986-07-18 | 1990-01-10 | Wavin Bv | Channel conduit couplings |
US4980115A (en) * | 1987-05-28 | 1990-12-25 | Yoshida Industry Co. Ltd. | Method for making an injection-molded product having a partly thin portion |
US4820149A (en) * | 1987-05-28 | 1989-04-11 | Yoshida Industry Co., Ltd. | Apparatus for manufacturing an injection-molded product having a partly thin portion |
DE3718782A1 (de) * | 1987-06-04 | 1989-01-12 | Frank Schellenbach | Spritzkern fuer die verwendung bei einem zwei-stoffe-spritzgiessen |
US5447674A (en) * | 1987-06-04 | 1995-09-05 | Schellenbach; Frank | Method for producing a gas-tight plastic closure for containers |
FR2618683B1 (fr) * | 1987-07-31 | 1992-03-06 | Aguettant Lab | Procede de fabrication de pieces d'acces de recipients de liquides de perfusion |
SE464726B (sv) * | 1987-10-29 | 1991-06-03 | Forsheda Ab | Roermuff och saett att bilda denna |
US4959188A (en) * | 1988-04-04 | 1990-09-25 | Automotive Products Plc | Method for forming a hydraulic cylinder assembly |
US5251954A (en) * | 1992-01-31 | 1993-10-12 | Starcade, Inc. | Plastic vehicle cowling with integrally molded seal |
SE505267C2 (sv) * | 1992-03-10 | 1997-07-28 | Forsheda Ab | Sätt att framställa åtminstone två olika slag av tätningsringar och tätningselement för användning vid genomförande av sättet |
WO1994000286A1 (en) * | 1992-06-29 | 1994-01-06 | Tokai Rubber Industries, Ltd. | Resin hose connecting structure |
DE4227356A1 (de) * | 1992-08-19 | 1994-03-03 | Wildfang Dieter Gmbh | Verfahren zum Herstellen sanitärer Einbauteile sowie danach hergestelltes Einbauteil |
SI0691506T1 (en) * | 1994-07-08 | 1999-04-30 | Hobas Engineering Ag | Sleeve for connecting two plastic pipes |
JP3003913B2 (ja) * | 1994-07-26 | 2000-01-31 | 矢崎総業株式会社 | 防水コネクタハウジングの製造方法およびその方法に用いるハウジング並びに装置 |
JP2991327B2 (ja) * | 1994-12-02 | 1999-12-20 | 矢崎総業株式会社 | 防水コネクタハウジングの製造方法 |
US5678610A (en) * | 1995-02-24 | 1997-10-21 | Oem/Miller Corporation | Composite tube and method of manufacture |
FR2734039B1 (fr) * | 1995-05-11 | 1997-06-06 | Oreal | Valve perfectionnee pour dispositif de conditionnement et de distribution d'un produit stocke sous pression, dispositif ainsi equipe et procede de fabrication |
DE19524458A1 (de) * | 1995-07-07 | 1997-01-09 | Weener Plastik Gmbh Co Kg | Verschluß |
FR2749639B1 (fr) * | 1996-06-10 | 1998-08-21 | Hutchinson | Dispositif de raccord rapide pour conduit de fluide sous pression |
FR2751912B1 (fr) * | 1996-07-30 | 1998-10-30 | Gen Plastics | Procede et dispositif pour obtenir une piece en matiere plastique cylindrique avec des elements en relief en matiere plastique differente et piece ainsi obtenue |
NL1003918C1 (nl) * | 1996-08-30 | 1998-03-04 | Dsm Nv | Deksel voor een houder met geknikte bovenrand. |
GB2325636B (en) * | 1997-05-31 | 2002-04-17 | Dalatek Ltd | Improvements in or relating to pipes |
NL1008949C2 (nl) * | 1998-02-11 | 1999-08-12 | Inter Tooling Services Bv | Werkwijze en inrichting voor het vervaardigen van een manchetafdichting voor een kunststof fitting of fittingring. |
NL1008269C2 (nl) * | 1998-02-11 | 1999-08-12 | Inter Tooling Services Bv | Werkwijze en inrichting voor het vervaardigen van een manchetafdichting voor een kunststof fitting of fittingring. |
JP3299178B2 (ja) * | 1998-04-16 | 2002-07-08 | 矢崎総業株式会社 | モールド成形体及びその成形方法 |
US6428729B1 (en) * | 1998-05-28 | 2002-08-06 | Entegris, Inc. | Composite substrate carrier |
US6871741B2 (en) * | 1998-05-28 | 2005-03-29 | Entegris, Inc. | Composite substrate carrier |
JP3865024B2 (ja) * | 1998-09-18 | 2007-01-10 | Nok株式会社 | ガスケット |
AU764088B2 (en) * | 1999-02-01 | 2003-08-07 | Caroma Industries Limited | A pipe connection assembly |
WO2000053965A1 (en) * | 1999-03-10 | 2000-09-14 | Radius Plastics Limited | Corrugated pipe connector and method of manufacture |
EP1268156B1 (en) * | 2000-03-21 | 2004-05-26 | David Mullan | Method and apparatus for making a pipe coupling |
GB0010180D0 (en) * | 2000-04-26 | 2000-06-14 | City Tech | Improvements relating to electrochemical gas sensors |
WO2002029295A2 (en) * | 2000-10-06 | 2002-04-11 | Robertshaw Controls Company | Improved stopcock |
NL1017510C2 (nl) * | 2001-03-06 | 2002-09-20 | Wavin Bv | Inrichting en werkwijze voor het vervaardigen van een van een afdichtingsring voorzien mofeind van een buisdeel. |
EP1312847A1 (en) * | 2001-11-19 | 2003-05-21 | MAXPLA S.r.l. | Sleeve of a gland assembly |
JP3706840B2 (ja) * | 2002-03-28 | 2005-10-19 | 森六株式会社 | シール付き外装部材の製造方法 |
US6887419B2 (en) * | 2002-05-31 | 2005-05-03 | Mgs Mfg. Group, Inc. | De-gating mold for injection molding of elastic materials |
WO2005053929A1 (en) * | 2003-12-01 | 2005-06-16 | Uniteam Italia Srl | Method for coupling a seal, realized with polymeric materials, to a rigid duct |
DE102005008674A1 (de) * | 2005-02-25 | 2006-08-31 | Bayerische Motoren Werke Ag | Steckkupplung |
KR100903719B1 (ko) * | 2007-07-18 | 2009-06-19 | 박기훈 | 파이프 연결관과 그 제조방법 |
FR2924785B1 (fr) * | 2007-12-05 | 2012-02-24 | Sanitaire Accessoires Services S A S | Dispositif de raccordement de tuyauteries pour siphon |
GB0800112D0 (en) * | 2008-01-04 | 2008-02-13 | Smiths Group Plc | Tubes and their manufacture |
US9259127B2 (en) * | 2008-04-09 | 2016-02-16 | Roland Artur Stanger | Pipe coupling |
IT1393549B1 (it) * | 2009-04-03 | 2012-04-27 | Coes S P A | Giunzione per il collegamento a tenuta idraulica di tubi o raccordi, particolarmente in polipropilene, per impianti idraulici a bassa pressione. |
GB0921694D0 (en) * | 2009-12-11 | 2010-01-27 | Spd Swiss Prec Diagnostics Gmb | Improvements in or relating to moulded articles |
CN103090146A (zh) * | 2013-01-31 | 2013-05-08 | 李忠诚 | Pe管道冷连接套筒 |
ITTO20130868A1 (it) | 2013-10-28 | 2015-04-29 | Borla Ind | Componente di flusso per linee medicali e relativo procedimento di fabbricazione |
DE102016206915A1 (de) * | 2016-04-22 | 2017-10-26 | Deere & Company | Baugruppe zum Anschluss einer Leitung |
JP6259873B1 (ja) * | 2016-08-02 | 2018-01-10 | 日本ピラー工業株式会社 | 樹脂製管継手の製造方法 |
US11131412B2 (en) | 2017-04-19 | 2021-09-28 | Mueller International, Llc | Joint restraint device |
US10677381B2 (en) | 2017-04-19 | 2020-06-09 | Mueller International, Llc | Joint restraint device |
US11199280B2 (en) | 2017-04-19 | 2021-12-14 | Mueller Intemational, LLC | Joint restraint device |
US11215306B2 (en) | 2017-04-19 | 2022-01-04 | Mueller International, Llc | Joint restraint device |
US10941887B2 (en) | 2017-07-13 | 2021-03-09 | Mueller International Llc | Wide range coupling |
US11193609B2 (en) * | 2018-02-28 | 2021-12-07 | Mueller International, Llc | Pipe coupling |
CN108724780B (zh) * | 2018-05-23 | 2021-09-24 | 惠州亿纬锂能股份有限公司 | 一种电池密封件成型方法 |
US11473705B2 (en) | 2018-08-22 | 2022-10-18 | Mueller International, Llc | Joint restraint device |
US10774508B2 (en) | 2018-09-04 | 2020-09-15 | Mueller International, Llc | Hydrant shoe assembly |
CN109488812A (zh) * | 2018-11-27 | 2019-03-19 | 广东中讯通讯设备实业有限公司 | 一种高强度pvc管材及其加工方法 |
US11162621B2 (en) | 2019-02-04 | 2021-11-02 | Mueller International, Llc | Gland assembly |
US11396965B2 (en) | 2019-07-19 | 2022-07-26 | Mueller International, Llc | Restraint gripper cover with lockout breakaway |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7221985U (de) * | 1972-11-23 | Societe Trefimetaux | Vorrichtung zum klebfreien Verbinden von Rohren aus plastischem Material | |
DE1902520A1 (de) * | 1969-01-18 | 1970-08-06 | Harald Krakar | Formstuecke fuer Rohrverbindungen |
BE754163A (fr) * | 1969-07-31 | 1970-02-01 | Pneumatiques Caoutchouc Mfg | Manchon de raccordement pour tuyauteries |
DE2157015C2 (de) * | 1971-11-17 | 1982-04-01 | Industriewerk Schaeffler Ohg, 8522 Herzogenaurach | Verfahren zur Herstellung einer Dichtung aus spritzbarem Werkstoff |
AU6148173A (en) * | 1972-10-27 | 1975-04-17 | Johns-Manville Corporation | Plastic pipe thrust resistant joint |
US3960394A (en) * | 1973-08-16 | 1976-06-01 | Deutsches Brennstoffinstitut Freiberg | Pipe union |
DE7407979U (de) * | 1974-03-07 | 1975-11-27 | Kunststoffwerk Gebrueder Anger Gmbh & Co | Fitting oder dergleichen |
DE2416936B2 (de) * | 1974-04-08 | 1977-10-27 | Rehau-Plastiks Gmbh, 8673 Rehau | Steckverbindung |
JPS58363B2 (ja) * | 1974-12-19 | 1983-01-06 | 積水化学工業株式会社 | カンツギテノ セイゾウソウチ |
GB1477074A (en) * | 1975-01-31 | 1977-06-22 | Hepworth Iron Co Ltd | Manufacture of pipe couplings |
AR207088A1 (es) * | 1975-07-29 | 1976-09-09 | Anger Anton Maschbau | Procedimiento para producir un articulo de material sintetico |
GB1572099A (en) * | 1976-04-06 | 1980-07-23 | Hepworth Iron Co Ltd | Manufacture of pipe couplings |
GB1546769A (en) * | 1976-06-08 | 1979-05-31 | Hepworth Iron Co Ltd | Pipe couplings |
GB1595225A (en) * | 1977-02-04 | 1981-08-12 | Hepworth Iron Co Ltd | Coupling pipes |
DE2845308C3 (de) * | 1978-10-18 | 1982-02-18 | Battenfeld Maschinenfabriken Gmbh, 5882 Meinerzhagen | Fitting oder dergleichen aus formstabilem Kunststoff für Rohrverbindungen sowie Verfahren und Werkzeug zu seiner Herstellung |
-
1979
- 1979-10-08 CH CH903279A patent/CH643047A5/de not_active IP Right Cessation
- 1979-10-10 NO NO793248A patent/NO793248L/no unknown
- 1979-10-11 IT IT26410/79A patent/IT1123805B/it active
- 1979-10-12 AT AT0668079A patent/AT378498B/de not_active IP Right Cessation
- 1979-10-16 GB GB7935863A patent/GB2035192B/en not_active Expired
- 1979-10-17 SE SE7908591A patent/SE7908591L/sv not_active Application Discontinuation
- 1979-10-17 AU AU51889/79A patent/AU532018B2/en not_active Ceased
- 1979-10-17 BR BR7906682A patent/BR7906682A/pt unknown
- 1979-10-18 FR FR7926203A patent/FR2439077A1/fr active Granted
- 1979-10-18 NL NL7907705A patent/NL7907705A/nl not_active Application Discontinuation
-
1981
- 1981-06-03 US US06/269,820 patent/US4410479A/en not_active Expired - Fee Related
-
1983
- 1983-03-16 US US06/475,848 patent/US4552384A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
AU532018B2 (en) | 1983-09-15 |
GB2035192B (en) | 1983-05-11 |
NO793248L (no) | 1980-04-21 |
FR2439077B3 (sv) | 1981-07-17 |
US4552384A (en) | 1985-11-12 |
NL7907705A (nl) | 1980-04-22 |
BR7906682A (pt) | 1980-06-17 |
AT378498B (de) | 1985-08-12 |
ATA668079A (de) | 1985-01-15 |
US4410479A (en) | 1983-10-18 |
IT1123805B (it) | 1986-04-30 |
AU5188979A (en) | 1980-04-24 |
GB2035192A (en) | 1980-06-18 |
FR2439077A1 (fr) | 1980-05-16 |
IT7926410A0 (it) | 1979-10-11 |
CH643047A5 (de) | 1984-05-15 |
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