BE857176Q - Circuit d'irrigation et son procede de production - Google Patents
Circuit d'irrigation et son procede de productionInfo
- Publication number
- BE857176Q BE857176Q BE179658A BE179658A BE857176Q BE 857176 Q BE857176 Q BE 857176Q BE 179658 A BE179658 A BE 179658A BE 179658 A BE179658 A BE 179658A BE 857176 Q BE857176 Q BE 857176Q
- Authority
- BE
- Belgium
- Prior art keywords
- production process
- irrigation circuit
- irrigation
- circuit
- production
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/06—Watering arrangements making use of perforated pipe-lines located in the soil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/0026—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting
- B29B17/0042—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting for shaping parts, e.g. multilayered parts with at least one layer containing regenerated plastic
-
- 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
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
-
- 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
- B29K2021/00—Use of unspecified rubbers as moulding 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
- B29L2030/00—Pneumatic or solid tyres 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
-
- 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
- Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
- Y10S264/05—Use of one or more blowing agents together
-
- 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
- Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
- Y10S264/13—Cell size and distribution control while molding a foam
-
- 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
- Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
- Y10S264/911—Recycling consumer used articles or products
- Y10S264/912—From toroidal shapes, e.g. resilient tires
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Environmental Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Graft Or Block Polymers (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Molding Of Porous Articles (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/445,866 US4003408A (en) | 1974-02-26 | 1974-02-26 | Underground irrigation porous pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
BE857176Q true BE857176Q (fr) | 1977-11-14 |
Family
ID=23770506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE179658A BE857176Q (fr) | 1974-02-26 | 1977-07-26 | Circuit d'irrigation et son procede de production |
Country Status (8)
Country | Link |
---|---|
US (2) | US4003408A (fr) |
JP (2) | JPS50119433A (fr) |
BE (1) | BE857176Q (fr) |
DE (1) | DE2506674A1 (fr) |
FR (1) | FR2261702B1 (fr) |
GB (1) | GB1470918A (fr) |
IL (1) | IL46519A (fr) |
IT (1) | IT1029843B (fr) |
Families Citing this family (71)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4003408A (en) * | 1974-02-26 | 1977-01-18 | George C. Ballas, trustee | Underground irrigation porous pipe |
US4168799A (en) * | 1977-09-16 | 1979-09-25 | Entek Corporation | Soaker hose |
DE3046479A1 (de) * | 1980-12-10 | 1982-07-22 | Helmut Dr. 1000 Berlin Lorenz | Emitter fuer die oberirdische und unterirdische tropfbewaesserung |
DE3049558A1 (de) * | 1980-12-31 | 1982-07-29 | Akzo Gmbh, 5600 Wuppertal | Unterirdische bewaesserung oder traenkung von boeden |
JPS58167628A (ja) * | 1982-03-27 | 1983-10-03 | Toshiro Tabata | 多孔性ホ−ス及びその製造法 |
DE3224324A1 (de) * | 1982-06-30 | 1984-01-05 | Basf Ag, 6700 Ludwigshafen | Zweistufenverfahren zur herstellung von thermoplastischen polyurethan-elastomeren |
JPS5983886A (ja) * | 1982-11-05 | 1984-05-15 | 日本ゼオン株式会社 | 多孔性パイプ |
US4517316A (en) * | 1984-01-24 | 1985-05-14 | Dasurat Enterprises Pte Ltd. | Porous irrigation pipe prepared from particulate elastomer and thermoplastic binder containing controlled moisture content |
US5015515A (en) * | 1984-07-24 | 1991-05-14 | Paulin Dale W | Ventilated expandable boot |
US4628073A (en) * | 1984-10-03 | 1986-12-09 | Monsanto Company | Soft, rubbery, multiphase matrix material and methods for its production |
JPH0530614Y2 (fr) * | 1986-03-28 | 1993-08-05 | ||
JPS6434950U (fr) * | 1987-08-26 | 1989-03-03 | ||
US4824287A (en) * | 1988-02-19 | 1989-04-25 | Tracy Lawrence M | Septic system |
US4970043A (en) * | 1988-04-12 | 1990-11-13 | Doan Rosetta C | Process for forming thermoplastic material from granular scrap material |
US4931236A (en) * | 1989-03-10 | 1990-06-05 | Seibolt Hettinga | Method for forming irrigation pipe having a porous side wall |
WO1990012680A1 (fr) * | 1989-04-25 | 1990-11-01 | Subrain, Ltd. | Procede et appareil pour produire des tubes poreux |
US4958770A (en) * | 1989-05-03 | 1990-09-25 | Prescision Porous Pipe, Inc. | Process for making uniform porosity flexible irrigation pipe |
MX173573B (es) * | 1989-06-19 | 1994-03-16 | Subsurface Technology Corp | Mejoras en tubo poroso y proceso para producirlo |
US5051034A (en) * | 1989-12-18 | 1991-09-24 | Gas Research Institute | Magnetically detectable plastic pipe |
JPH0753406B2 (ja) * | 1990-08-08 | 1995-06-07 | 東邦ポリマー工業株式会社 | 液体及び気体が透過可能なゴム成形品の製造方法 |
US5316708A (en) * | 1990-09-17 | 1994-05-31 | Terence Drews | Method for making products made from recycled vehicle tires |
NL9002673A (nl) * | 1990-12-05 | 1992-07-01 | Vredestein Icopro Bv | Werkwijze voor het activeren van gevulcaniseerde afvalrubberdeeltjes en werkwijze voor het vervaardigen van een rubberachtig voorwerp onder toepassing van de geactiveerde afvalrubberdeeltjes. |
US5114648A (en) * | 1991-03-28 | 1992-05-19 | Kuc Sr John | Method of producing products from rubber compositions |
US5861117A (en) * | 1991-08-01 | 1999-01-19 | Rumber Materials, Inc. | Process and apparatus for cooling an extrudate |
US5523328A (en) * | 1991-08-01 | 1996-06-04 | Renewed Materials Industries, Inc. | Process and apparatus for extruding mixtures of thermoplastic and thermoset materials and products made therefrom |
US5312573A (en) * | 1991-08-01 | 1994-05-17 | Renewed Materials Industries, Inc. | Process for extruding mixtures of thermoplastic and thermoset materials |
WO1996005955A1 (fr) * | 1992-06-04 | 1996-02-29 | Sullivan Henry W | Appareil permettant de fabriquer des tuyaux poreux souples |
US5366365A (en) * | 1992-06-04 | 1994-11-22 | Sullivan Henry W | Means for controlling feedstock compaction in forming flexible porous pipes of controlled pore size |
US5299885A (en) * | 1992-08-14 | 1994-04-05 | Aquapore Moisture Systems, Inc. | Stabilized porous pipe |
KR0162538B1 (ko) * | 1993-12-10 | 1998-11-16 | 쮸치야 히로오 | 토양관개용 파이프 및 이것을 이용한 토양관개방법 및 토양으로의 기체공급방법 |
FR2716835B1 (fr) * | 1994-03-01 | 1996-04-26 | Itep Int | Procédé de fabrication d'un tuyau poreux, tuyau poreux obtenu par ledit procédé et utilisation d'un tel tuyau en irrigation. |
US5534207A (en) * | 1994-07-08 | 1996-07-09 | Natural Resource Recovery, Inc. | Method and apparatus for forming an article from recyclable plastic materials |
US5692545A (en) * | 1995-12-05 | 1997-12-02 | Rodrigue; Wayne | Fiber optic cable duct |
WO1997021532A1 (fr) * | 1995-12-12 | 1997-06-19 | Conenor Oy | Procede de fabrication d'un materiau homogene a l'aide d'une extrudeuse, extrudeuse et tuyau plastique multicouche |
US5733943A (en) * | 1996-02-07 | 1998-03-31 | Doan; Rosetta C. | Street signs and other products and method for making same from used rubber tires |
US6833396B2 (en) * | 1996-07-15 | 2004-12-21 | Dan R. Radke, Jr. | Molding material made from recycled scrap tires |
US5811038A (en) * | 1996-09-27 | 1998-09-22 | Plastic Specialties And Technologies Investments, Inc. | Method of blending components for porous plastic pipe processing |
US5811164A (en) * | 1996-09-27 | 1998-09-22 | Plastic Specialties And Technologies Investments, Inc. | Aeration pipe and method of making same |
US5816742A (en) * | 1996-09-30 | 1998-10-06 | Cordewener; Charles H. | Permeable conduits for disbursing fluids |
PL333102A1 (en) * | 1996-10-24 | 1999-11-08 | Ila Ag | Pipe fitting for discharging flue gas from a flue gas discharge pipeline and flue gas discharge pipeline as such |
US5921711A (en) * | 1997-01-23 | 1999-07-13 | Sipaila; Jonas Z. | Subsurface fluid distribution apparatus and method |
KR100295574B1 (ko) * | 1997-01-27 | 2001-10-24 | 이병걸 | 섬유수지복합부재및그제조방법 |
EP0965434A1 (fr) * | 1998-06-16 | 1999-12-22 | Arte Plast S.a.s., di Giuseppe Micciche & C. | Procédé et appareil pour la fabrication en continu de barres à partir de mélanges hétérogènes de matière plastique recyclée |
US6446383B1 (en) | 1998-07-02 | 2002-09-10 | Tom Hoshall | Subsurface pesticide injection and fluid extraction system |
US6129877A (en) * | 1998-09-04 | 2000-10-10 | Kuc, Sr.; John | Method and system for fabricating elastomeric articles |
US6142703A (en) * | 1999-03-01 | 2000-11-07 | Wilmot; Charles | Encapsulated turf maintenance system |
US6511054B1 (en) | 2000-10-05 | 2003-01-28 | Truman Green | Porous air diffuser for treatment of liquids |
JP3902927B2 (ja) * | 2001-08-10 | 2007-04-11 | 日本化学販売株式会社 | 排水管 |
US20050206029A1 (en) * | 2001-10-24 | 2005-09-22 | Moore Roy E Jr | Method for recycling carpet and articles made therefrom |
MXPA04003786A (es) * | 2001-10-24 | 2005-04-08 | Infiltrator Systems Inc | Un metodo para reciclar alfombras y articulos hechos de las mismas. |
CA2378922C (fr) * | 2002-01-16 | 2009-01-27 | Rutgers, The State University Of New Jersey | Compositions et methodes de fabrication d'articles en plastique a partir de melanges polymeres contenant du polyethylene |
US6972144B2 (en) * | 2002-04-19 | 2005-12-06 | Hunter Paine Enterprises, Llc | Composite structural material and method of making same |
AU2002316106A1 (en) * | 2002-06-14 | 2003-12-31 | Ace Tire And Parts, Inc. | Recyclable composite material and method of using composite |
GB2399532B (en) * | 2003-03-19 | 2007-10-24 | Econoplas Ltd | Method of manufacturing drainage/irrigation elements from recycled plastics |
US6877272B2 (en) | 2003-04-10 | 2005-04-12 | Tom Hoshall | Method of applying pesticide |
US20050150983A1 (en) * | 2004-01-08 | 2005-07-14 | Yang Lung Y. | Flexible hose device for spraying purposes |
US20060043219A1 (en) * | 2004-09-02 | 2006-03-02 | Moshe Raanan | Drip irrigation pipe |
TW200635830A (en) * | 2004-12-29 | 2006-10-16 | Hunter Paine Entpr Llc | Composite structural material and method of making the same |
US20070189852A1 (en) * | 2006-01-31 | 2007-08-16 | Greg Wolfley | Modular network irrigation system |
CN101152639B (zh) * | 2006-09-29 | 2010-05-19 | 台州标新铝塑工业有限公司 | 一种微孔渗水管的制备方法和以该方法制备的产品 |
US7451568B2 (en) * | 2007-03-06 | 2008-11-18 | Tom Hoshall | Subsurface insect detection and pesticide injection system |
DE102008006276A1 (de) * | 2008-01-25 | 2009-07-30 | Gerhardt Friedel | Verfahren zur Herstellung eines porösen Schlauchs |
DE102008008035B4 (de) * | 2008-02-05 | 2010-06-02 | Oleksandr Gitelman | Verfahren zur Herstellung von Polyamidschaum |
US20120279120A1 (en) * | 2010-10-28 | 2012-11-08 | Agrosci, Inc. | Subsurface heat actuated evaporative irrigation method and system |
US8409321B2 (en) * | 2010-12-06 | 2013-04-02 | Tekni-Plex, Inc. | Method and apparatus for leaching metal from mining ore |
CN103835189B (zh) * | 2013-12-27 | 2017-02-08 | 李嘉晖 | 低温环境下新型建筑材料的研究方法 |
CN105415531A (zh) * | 2015-10-21 | 2016-03-23 | 宁波绿华橡塑机械工贸有限公司 | 废旧橡塑料韧性增强设备 |
US10010031B1 (en) | 2017-05-25 | 2018-07-03 | Xue Wu Liu | Multifunctional underground irrigation system |
US10786937B2 (en) * | 2018-07-10 | 2020-09-29 | Ningxia University | Processing technology for making seepage irrigation pipe with alternate effluent section and non-effluent section |
CN108935031A (zh) * | 2018-07-12 | 2018-12-07 | 安徽独秀山蓝莓科技开发有限公司 | 一种蓝莓种植用喷水设备 |
US10703909B1 (en) | 2019-02-23 | 2020-07-07 | Kenneth Nystrom | Products by upcycling landfill waste streams |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US968226A (en) * | 1909-09-29 | 1910-08-23 | Robert L Ziller | Porous pipe and method of manufacturing the same. |
US1254906A (en) * | 1916-08-24 | 1918-01-29 | Alexander Franklin Henderson | Surface-irrigating system. |
US1427754A (en) * | 1921-03-31 | 1922-08-29 | And herman w | |
US1952766A (en) * | 1930-01-02 | 1934-03-27 | Mazer Jacob | Sound absorbing material and method of making the same |
US1989427A (en) * | 1932-02-29 | 1935-01-29 | Michigan State Board Of Agricu | Irrigation apparatus |
DE687877C (de) * | 1936-12-23 | 1940-02-08 | Juan Duarry | Pressform zum Herstellen von Gegenstaenden aus Kautschukstaub |
US2354260A (en) * | 1941-04-26 | 1944-07-25 | Celanese Corp | Cellular material |
US2336734A (en) * | 1941-11-29 | 1943-12-14 | Kellogg M W Co | Extrusion of substantially surfacedry nonplastic material |
US2645249A (en) * | 1949-04-30 | 1953-07-14 | Oscar C Stahl | Plastic resin tubing and method of making the same |
US2554607A (en) * | 1950-07-18 | 1951-05-29 | William H Woolf | Process of remolding vulcanized rubber |
US2723934A (en) * | 1953-10-05 | 1955-11-15 | B B Chem Co | Porous rubber materials |
US2871774A (en) * | 1955-02-24 | 1959-02-03 | Us Rubber Reclaiming Co | Process of forming flooring surfaces with asphalt coated rubber pellets |
US3027599A (en) * | 1956-06-15 | 1962-04-03 | Trachta Josef | Method of molding articles from scrap tire material |
US2807505A (en) * | 1956-07-02 | 1957-09-24 | Shuford Mills | Soil soaking devices |
US3267187A (en) * | 1963-10-10 | 1966-08-16 | American Biltrite Rubber Co | Textured sheet material |
FR1405962A (fr) * | 1964-06-03 | 1965-07-16 | Procédé de fabrication de tuyaux poreux notamment pour le drainage des sols, et tuyaux ainsi obtenus | |
US3552654A (en) * | 1967-06-22 | 1971-01-05 | Lewis C Thomas | Irrigation conduit and composition and method for producing such |
US3558753A (en) * | 1967-11-13 | 1971-01-26 | Int Plastics | Method of producing a porous resin by withdrawing gas from a foam extrudate while it is in a semi-molten state |
US3774648A (en) * | 1967-11-13 | 1973-11-27 | Int Plastics | Porous plastic structures having apertures |
FR1595416A (fr) * | 1968-01-19 | 1970-06-08 | ||
BE795486Q (fr) * | 1969-11-03 | 1973-05-29 | Ringdal Lars | Procede de preparation d'objets en matiere thermoplastique |
US3912800A (en) * | 1970-09-21 | 1975-10-14 | Int Plastics | Method of producing porous polymeric articles |
JPS4823874U (fr) * | 1971-07-27 | 1973-03-19 | ||
US3836423A (en) * | 1971-09-09 | 1974-09-17 | Hooker Chemical Corp | Method of introducing air permeability into a non-porous continuous film and resultant film |
JPS5123099Y2 (fr) * | 1971-09-28 | 1976-06-14 | ||
US4003408A (en) * | 1974-02-26 | 1977-01-18 | George C. Ballas, trustee | Underground irrigation porous pipe |
US4028288A (en) * | 1976-02-03 | 1977-06-07 | Tire Recyclers International, Inc. | Moldable end products from primarily reclaimable waste materials |
-
1974
- 1974-02-26 US US05/445,866 patent/US4003408A/en not_active Expired - Lifetime
-
1975
- 1975-01-28 IL IL46519A patent/IL46519A/en unknown
- 1975-02-12 GB GB604875A patent/GB1470918A/en not_active Expired
- 1975-02-17 DE DE19752506674 patent/DE2506674A1/de not_active Withdrawn
- 1975-02-24 IT IT4831675A patent/IT1029843B/it active
- 1975-02-25 JP JP2337575A patent/JPS50119433A/ja active Pending
- 1975-02-25 FR FR7505879A patent/FR2261702B1/fr not_active Expired
-
1976
- 1976-06-25 US US05/699,885 patent/US4110420A/en not_active Expired - Lifetime
-
1977
- 1977-07-26 BE BE179658A patent/BE857176Q/fr active
-
1980
- 1980-09-30 JP JP13898380U patent/JPS5659855U/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JPS50119433A (fr) | 1975-09-18 |
FR2261702A1 (fr) | 1975-09-19 |
US4003408A (en) | 1977-01-18 |
DE2506674A1 (de) | 1975-08-28 |
US4110420A (en) | 1978-08-29 |
FR2261702B1 (fr) | 1978-12-29 |
IL46519A (en) | 1977-05-31 |
IL46519A0 (en) | 1975-04-25 |
IT1029843B (it) | 1979-03-20 |
JPS5659855U (fr) | 1981-05-22 |
GB1470918A (en) | 1977-04-21 |
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