SE8001608L - Som rormatta utford vermevexlare - Google Patents
Som rormatta utford vermevexlareInfo
- Publication number
- SE8001608L SE8001608L SE8001608A SE8001608A SE8001608L SE 8001608 L SE8001608 L SE 8001608L SE 8001608 A SE8001608 A SE 8001608A SE 8001608 A SE8001608 A SE 8001608A SE 8001608 L SE8001608 L SE 8001608L
- Authority
- SE
- Sweden
- Prior art keywords
- rormatta
- challenges
- changes
- webs
- mat
- Prior art date
Links
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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/565—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits involving interference fits, e.g. force-fits or press-fits
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/124—Tongue and groove joints
- B29C66/1244—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue
- B29C66/12441—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue being a single wall
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/522—Joining tubular articles
- B29C66/5224—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces
- B29C66/52241—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces with two right angles, e.g. for making T-shaped pieces
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/522—Joining tubular articles
- B29C66/5229—Joining tubular articles involving the use of a socket
-
- 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
- F16L47/26—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics for branching pipes; for joining pipes to walls; Adaptors therefor
-
- 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
- F16L9/00—Rigid pipes
- F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies
- F16L9/19—Multi-channel pipes or pipe assemblies
- F16L9/20—Pipe assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/12—Tube and panel arrangements for ceiling, wall, or underfloor heating
- F24D3/14—Tube and panel arrangements for ceiling, wall, or underfloor heating incorporated in a ceiling, wall or floor
- F24D3/146—Tubes specially adapted for underfloor heating
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- 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
- B29L2031/18—Heat-exchangers or parts thereof
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/017,728 US4270596A (en) | 1979-03-05 | 1979-03-05 | Tube mat heat exchanger |
Publications (1)
Publication Number | Publication Date |
---|---|
SE8001608L true SE8001608L (sv) | 1980-09-06 |
Family
ID=21784212
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8001608A SE8001608L (sv) | 1979-03-05 | 1980-02-29 | Som rormatta utford vermevexlare |
Country Status (17)
Country | Link |
---|---|
US (1) | US4270596A (xx) |
JP (3) | JPS55123994A (xx) |
AR (1) | AR222376A1 (xx) |
AU (3) | AU517760B2 (xx) |
BE (1) | BE881524A (xx) |
BR (1) | BR8001282A (xx) |
CA (1) | CA1111839A (xx) |
DE (3) | DE3050690C2 (xx) |
ES (2) | ES8103360A1 (xx) |
FR (1) | FR2453383A1 (xx) |
GB (1) | GB2044909B (xx) |
IT (1) | IT1193408B (xx) |
NL (1) | NL8001103A (xx) |
NZ (2) | NZ202528A (xx) |
SE (1) | SE8001608L (xx) |
YU (1) | YU61280A (xx) |
ZA (1) | ZA80762B (xx) |
Families Citing this family (45)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4381764A (en) * | 1980-03-20 | 1983-05-03 | Warren Wojcik | Solar panel |
US4354546A (en) * | 1980-07-17 | 1982-10-19 | Bio-Energy Systems, Inc. | Header pair and double tube mat connection |
DE3124048C2 (de) * | 1981-06-15 | 1984-05-30 | Donald Dipl.-Ing. 1000 Berlin Herbst | Rohrleitungsgeflecht für die Warmwasser-Flächenheizung von Fußböden oder Wänden |
DE3126618C2 (de) * | 1981-07-06 | 1986-08-07 | Akzo Gmbh, 5600 Wuppertal | Wärmeaustauscher aus Hohlfäden |
US4411101A (en) * | 1981-08-17 | 1983-10-25 | Springer Edward A | Apparatus and method for heating the root zone of plants |
US4577435A (en) * | 1981-08-17 | 1986-03-25 | Springer Edward A | Micro-climate temperature control apparatus |
US4401105A (en) * | 1981-09-23 | 1983-08-30 | Mcalister Roy E | Solar heating system, and improved heat collecting and radiating components, for livestock-confining buildings |
DE3216877C1 (de) * | 1982-05-03 | 1983-11-03 | Donald Dipl.-Ing. 1000 Berlin Herbst | In ein Gehaeuse einbaubares Waermeaustauschelement |
US4414960A (en) * | 1982-05-10 | 1983-11-15 | Insolar, Inc. | Solar collection mat element |
DE3234793A1 (de) * | 1982-09-20 | 1984-03-22 | Thyssen Plastik Anger KG, 8000 München | Fussbodenheizung |
JPS5954011U (ja) * | 1982-10-02 | 1984-04-09 | ソ−ラ−技研工業株式会社 | 床暖房における向対流用ヘツダ−管 |
DE3314200C2 (de) * | 1983-04-21 | 1986-01-02 | Donald Dipl.-Ing. 1000 Berlin Herbst | Trocken verlegbare Fußbodenheizung unter Verwendung von Matten |
JPS59208328A (ja) * | 1983-05-13 | 1984-11-26 | Solar Giken Kogyo Kk | 暖房マツト素材 |
JPS6030919A (ja) * | 1983-08-01 | 1985-02-16 | Hayakawa Rubber Co Ltd | 床暖房装置 |
JPS6048426A (ja) * | 1983-08-27 | 1985-03-16 | Asahi Kogyosha:Kk | 体育館の床暖房装置 |
JPS60122836A (ja) * | 1983-12-07 | 1985-07-01 | Toshiba Heating Appliances Co | 温水式床暖房装置 |
SE8307187L (sv) * | 1983-12-28 | 1985-06-29 | Ingestroem Curt Holger | Sett for miljoreglering i ett bostadshus |
GB2158215A (en) * | 1984-04-26 | 1985-11-06 | Fook Chong Chai | Cooling plant |
JPS6111594A (ja) * | 1984-06-27 | 1986-01-18 | Sumitomo Light Metal Ind Ltd | 折りたたみ式蓄熱蓄冷室用熱交換器 |
US4646818A (en) * | 1984-06-28 | 1987-03-03 | Ervin Jr Essie | Heated mats for melting snow and ice from outdoor surfaces |
DE3443214A1 (de) * | 1984-11-27 | 1986-05-28 | Thyssen Plastik Anger KG, 8000 München | Flaechenheizung |
JPS61156852U (xx) * | 1985-03-19 | 1986-09-29 | ||
JPS6236373U (xx) * | 1985-03-19 | 1987-03-04 | ||
EP0211101A1 (en) * | 1985-08-08 | 1987-02-25 | Interpat Service AG | Method and means for condensing/cleaning/vaporizing a flow of gas or liquid |
AU611084B2 (en) * | 1986-06-05 | 1991-06-06 | Zane Solar Systems Australia Pty Ltd | Improvements to heat exchangers |
US4832119A (en) * | 1986-06-05 | 1989-05-23 | Bloor Trevor J | Multi-tube heat exchanger and connectors therefor |
US4823771A (en) * | 1987-08-10 | 1989-04-25 | Jurgen Menning | Apparatus for solar heating |
JP2578637B2 (ja) * | 1988-04-22 | 1997-02-05 | ジャパンゴアテックス株式会社 | 柔軟な多孔質チューブの固定方法 |
JPH0259162U (xx) * | 1988-10-21 | 1990-04-27 | ||
US5022459A (en) * | 1988-12-06 | 1991-06-11 | Chiles Daniel T | Flexible hose heat exchanger construction with combination locating and thawing wire |
AT394109B (de) * | 1990-01-05 | 1992-02-10 | Solkav Solartechnik Ges M B H | Verwendung eines waermetauschers |
DE4007892C1 (en) * | 1990-03-13 | 1991-07-11 | Franz Dipl.-Ing. Innsbruck At Bucher | Elastomer pipe connecting nipple - has both end regions conically tapering towards end tips and middle shouldered section |
US5284204A (en) * | 1991-05-10 | 1994-02-08 | Electric Power Research Institute, Inc. | Hydronic thermal distribution system for space heating and cooling |
IL109269A (en) * | 1994-04-10 | 1996-10-31 | Magen Plastic | Heat exchanger |
FR2730029B1 (fr) * | 1995-01-27 | 1997-04-25 | Peugeot | Faisceau de canalisation pour vehicule automobile |
US6006826A (en) * | 1997-03-10 | 1999-12-28 | Goddard; Ralph Spencer | Ice rink installation having a polymer plastic heat transfer piping imbedded in a substrate |
DE19956204B4 (de) * | 1999-11-12 | 2005-10-27 | BeKa-Heiz- und Kühlmatten GmbH | Verfahren zur Herstellung eines Wärme- oder Kälte-Austauschbereichs |
JP2001248850A (ja) * | 1999-12-28 | 2001-09-14 | Toyox Co Ltd | 冷暖房用パイプマット |
US6787116B2 (en) * | 2001-05-02 | 2004-09-07 | Aquatherm Industries, Inc. | Overmolding insert for heat exchanger, process for manufacturing a heat exchanger, and heat exchanger produced thereby |
FR2862747B1 (fr) * | 2003-11-20 | 2008-09-05 | Commissariat A L'energie Atomique | Plaque d'echangeur de chaleur, et cet echangeur |
US6987928B2 (en) * | 2004-05-14 | 2006-01-17 | Chris Shields | Recirculating air snow melting pad system |
GB2445158A (en) * | 2006-12-23 | 2008-07-02 | Peter Martin Broatch | Solar collector comprising a flexible elongate web with fluid conduits |
EP2136168B1 (en) * | 2008-06-20 | 2020-01-15 | Electrolux Home Products Corporation N.V. | A cooling apparatus condenser, and a cooling apparatus including the same |
WO2012074519A1 (en) * | 2010-12-01 | 2012-06-07 | Aquatherm Industries, Inc. | Process for controlling the temperature of a horticultural product |
US9476166B2 (en) * | 2014-06-23 | 2016-10-25 | Gary J. Hydock | System for regulating temperature and moisture on a field |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US338815A (en) * | 1886-03-30 | Rubber tube for hatters irons | ||
US1102163A (en) | 1914-01-22 | 1914-06-30 | Haldor A Opperud | Boiler-flue reinforcement. |
US2594232A (en) * | 1947-09-16 | 1952-04-22 | Clinton L Stockstill | Solar heater and heat exchanger |
FR1029954A (fr) * | 1950-12-20 | 1953-06-09 | Installation de chauffage ou rafraîchissement par rayonnement | |
FR1045671A (fr) * | 1951-04-19 | 1953-11-30 | Procédé et dispositifs pour le chauffage de locaux par rayonnement du sol et du plafond | |
US3114969A (en) | 1959-01-27 | 1963-12-24 | Lanston Ind Inc | Method and structure for assembling flexible tubing within a bore, and joint produced thereby |
US3222093A (en) * | 1963-04-11 | 1965-12-07 | Carrier Corp | Fastening apparatus |
JPS4323941Y1 (xx) * | 1965-04-10 | 1968-10-09 | ||
DE2217252A1 (de) * | 1972-04-11 | 1973-10-31 | Daimler Benz Ag | Verbindung zwischen einer einspritzbrennkraftmaschine und einem kraftstoffbehaelter |
JPS49102346U (xx) * | 1972-12-22 | 1974-09-03 | ||
AR209169A1 (es) * | 1975-06-09 | 1977-03-31 | Duerst F | Una instalacion calefactora para pisos mediante agua caliente |
US3989282A (en) * | 1975-08-11 | 1976-11-02 | Reed Irrigation Systems | Plug-type device for interconnecting conduits |
JPS5255521A (en) * | 1975-10-30 | 1977-05-07 | Konishiroku Photo Ind Co Ltd | Preventing charging of silver halide photographic light sensitive mate rial |
US4114597A (en) * | 1975-12-31 | 1978-09-19 | The Franklin Institute | Unitary solar collector |
US4060070A (en) * | 1976-01-22 | 1977-11-29 | Solar Industries, Inc. | Solar heating |
JPS5385611U (xx) * | 1976-12-15 | 1978-07-14 | ||
US4112921A (en) * | 1977-04-25 | 1978-09-12 | Calmac Manufacturing Corporation | Method and system for utilizing a flexible tubing solar collector |
US4176654A (en) * | 1977-07-18 | 1979-12-04 | Bio-Energy Systems, Inc. | Solar heating apparatus |
DE2841225A1 (de) * | 1978-09-22 | 1980-04-03 | Gewerk Keramchemie | Mattenartiger, mehrschichtiger bodenbelag |
-
1979
- 1979-03-05 US US06/017,728 patent/US4270596A/en not_active Expired - Lifetime
-
1980
- 1980-01-31 AU AU55093/80A patent/AU517760B2/en not_active Ceased
- 1980-01-31 CA CA344,871A patent/CA1111839A/en not_active Expired
- 1980-02-04 BE BE0/199246A patent/BE881524A/fr not_active IP Right Cessation
- 1980-02-06 GB GB8003902A patent/GB2044909B/en not_active Expired
- 1980-02-11 NZ NZ202528A patent/NZ202528A/xx unknown
- 1980-02-11 ZA ZA00800762A patent/ZA80762B/xx unknown
- 1980-02-11 NZ NZ192842A patent/NZ192842A/xx unknown
- 1980-02-15 DE DE3050690A patent/DE3050690C2/de not_active Expired
- 1980-02-15 DE DE19808004113U patent/DE8004113U1/de not_active Expired
- 1980-02-15 DE DE3005752A patent/DE3005752C2/de not_active Expired
- 1980-02-20 JP JP2106680A patent/JPS55123994A/ja active Granted
- 1980-02-22 NL NL8001103A patent/NL8001103A/nl active Search and Examination
- 1980-02-27 FR FR8004357A patent/FR2453383A1/fr active Granted
- 1980-02-29 SE SE8001608A patent/SE8001608L/xx unknown
- 1980-03-04 IT IT67338/80A patent/IT1193408B/it active
- 1980-03-04 BR BR8001282A patent/BR8001282A/pt unknown
- 1980-03-04 ES ES489177A patent/ES8103360A1/es not_active Expired
- 1980-03-05 AR AR280181A patent/AR222376A1/es active
- 1980-03-05 YU YU00612/80A patent/YU61280A/xx unknown
- 1980-10-30 ES ES496417A patent/ES8201669A1/es not_active Expired
-
1983
- 1983-01-06 JP JP1983000702U patent/JPS58148512U/ja active Granted
-
1987
- 1987-06-16 JP JP1987092699U patent/JPH0124494Y2/ja not_active Expired
-
1989
- 1989-02-28 AU AU30861/89A patent/AU3086189A/en not_active Abandoned
- 1989-09-01 AU AU41008/89A patent/AU4100889A/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
FR2453383A1 (fr) | 1980-10-31 |
DE3005752C2 (de) | 1987-11-12 |
BR8001282A (pt) | 1980-11-04 |
YU61280A (en) | 1983-04-30 |
DE3005752A1 (de) | 1980-09-11 |
FR2453383B1 (xx) | 1984-07-06 |
GB2044909A (en) | 1980-10-22 |
JPS55123994A (en) | 1980-09-24 |
DE8004113U1 (de) | 1984-03-22 |
NZ192842A (en) | 1983-06-17 |
AU3086189A (en) | 1989-06-22 |
GB2044909B (en) | 1983-05-25 |
JPH0112099Y2 (xx) | 1989-04-10 |
AU517760B2 (en) | 1981-08-27 |
ES489177A0 (es) | 1981-02-16 |
JPS6346359B2 (xx) | 1988-09-14 |
JPS58148512U (ja) | 1983-10-05 |
CA1111839A (en) | 1981-11-03 |
DE3050690C2 (de) | 1985-06-05 |
US4270596B1 (xx) | 1983-10-04 |
NZ202528A (en) | 1983-07-15 |
AU4100889A (en) | 1989-12-14 |
ES8103360A1 (es) | 1981-02-16 |
ES496417A0 (es) | 1981-12-16 |
IT8067338A0 (it) | 1980-03-04 |
JPS63168721U (xx) | 1988-11-02 |
BE881524A (fr) | 1980-05-30 |
ES8201669A1 (es) | 1981-12-16 |
IT1193408B (it) | 1988-06-22 |
AR222376A1 (es) | 1981-05-15 |
JPH0124494Y2 (xx) | 1989-07-25 |
NL8001103A (nl) | 1980-09-09 |
AU5509380A (en) | 1980-09-11 |
ZA80762B (en) | 1981-08-26 |
US4270596A (en) | 1981-06-02 |
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