DE3931614A1 - Verfahren zur herstellung eines grosskalibrigen kunststoffrohres und strangpresswerkzeug fuer die durchfuehrung des verfahrens - Google Patents

Verfahren zur herstellung eines grosskalibrigen kunststoffrohres und strangpresswerkzeug fuer die durchfuehrung des verfahrens

Info

Publication number
DE3931614A1
DE3931614A1 DE3931614A DE3931614A DE3931614A1 DE 3931614 A1 DE3931614 A1 DE 3931614A1 DE 3931614 A DE3931614 A DE 3931614A DE 3931614 A DE3931614 A DE 3931614A DE 3931614 A1 DE3931614 A1 DE 3931614A1
Authority
DE
Germany
Prior art keywords
profile
cell
cooling
tool
section
Prior art date
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
DE3931614A
Other languages
German (de)
English (en)
Other versions
DE3931614C2 (enExample
Inventor
Byron Dikis
John Charaktinos
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.)
PETZETAKIS GEORGE ARISTOVOULOS PIRAEUS GR
Original Assignee
PETZETAKIS GEORGE ARISTOVOULOS PIRAEUS GR
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 by PETZETAKIS GEORGE ARISTOVOULOS PIRAEUS GR filed Critical PETZETAKIS GEORGE ARISTOVOULOS PIRAEUS GR
Priority to DE3931614A priority Critical patent/DE3931614A1/de
Priority to ES90117778T priority patent/ES2080773T3/es
Priority to AT90117778T priority patent/ATE131770T1/de
Priority to EP90117778A priority patent/EP0418760B1/de
Priority to NO90904089A priority patent/NO904089L/no
Priority to AU63003/90A priority patent/AU633362B2/en
Priority to PT95370A priority patent/PT95370B/pt
Priority to JP2250412A priority patent/JPH03205137A/ja
Priority to CA002025995A priority patent/CA2025995C/en
Priority to SU904831213A priority patent/RU1823818C/ru
Priority to FI904665A priority patent/FI904665A7/fi
Priority to ZA907575A priority patent/ZA907575B/xx
Publication of DE3931614A1 publication Critical patent/DE3931614A1/de
Priority to US07/885,751 priority patent/US5261988A/en
Application granted granted Critical
Publication of DE3931614C2 publication Critical patent/DE3931614C2/de
Priority to GR960400766T priority patent/GR3019367T3/el
Granted legal-status Critical Current

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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/58—Winding and joining, e.g. winding spirally helically
    • B29C53/78—Winding and joining, e.g. winding spirally helically using profiled sheets or strips
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/11—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/901—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/908—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article characterised by calibrator surface, e.g. structure or holes for lubrication, cooling or venting
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/904—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article using dry calibration, i.e. no quenching tank, e.g. with water spray for cooling or lubrication
    • 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
    • B29L2031/60—Multitubular or multicompartmented articles, e.g. honeycomb

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Extrusion Of Metal (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
DE3931614A 1989-09-22 1989-09-22 Verfahren zur herstellung eines grosskalibrigen kunststoffrohres und strangpresswerkzeug fuer die durchfuehrung des verfahrens Granted DE3931614A1 (de)

Priority Applications (14)

Application Number Priority Date Filing Date Title
DE3931614A DE3931614A1 (de) 1989-09-22 1989-09-22 Verfahren zur herstellung eines grosskalibrigen kunststoffrohres und strangpresswerkzeug fuer die durchfuehrung des verfahrens
ES90117778T ES2080773T3 (es) 1989-09-22 1990-09-15 Procedimiento para la fabricacion de un tubo de plastico de gran calibre y herramienta de extrusion para la puesta en practica del procedimiento.
AT90117778T ATE131770T1 (de) 1989-09-22 1990-09-15 Verfahren zur herstellung eines grosskalibrigen kunststoffrohres und strangpresswerkzeug für die durchführung des verfahrens
EP90117778A EP0418760B1 (de) 1989-09-22 1990-09-15 Verfahren zur Herstellung eines grosskalibrigen Kunststoffrohres und Strangpresswerkzeug für die Durchführung des Verfahrens
NO90904089A NO904089L (no) 1989-09-22 1990-09-19 Fremgangsmaate for fremstilling av et grovkalibret plastroer og ekstruderingsverktoey for gjennomfoering av denne fremgangsmaate.
PT95370A PT95370B (pt) 1989-09-22 1990-09-20 Processo para produzir um tubo de plastico de grande calibre e uma ferramenta de extrusao para executar esse processo
AU63003/90A AU633362B2 (en) 1989-09-22 1990-09-20 Process for the production of a large-calibre plastic pipe
JP2250412A JPH03205137A (ja) 1989-09-22 1990-09-21 大口径のプラスチック管の製造方法及びこの方法を実施するための押出し工具
CA002025995A CA2025995C (en) 1989-09-22 1990-09-21 Process for producing a large calibre plastic pipe and an extrusion tool for the process
SU904831213A RU1823818C (ru) 1989-09-22 1990-09-21 Способ изготовлени пластмассовой трубы большого диаметра и экструзионный инструмент
FI904665A FI904665A7 (fi) 1989-09-22 1990-09-21 Menetelmä suurihalkaisijaisen muoviputken valmistamiseksi ja suulakepuristintyökalu menetelmän toteuttamiseksi
ZA907575A ZA907575B (en) 1989-09-22 1990-09-21 Process for the production of a large-calibre plastic pipe and an extrusion tool for performing the process
US07/885,751 US5261988A (en) 1989-09-22 1992-05-18 Making large-diameter pipe
GR960400766T GR3019367T3 (en) 1989-09-22 1996-03-20 Method of manufacturing a large calibre plastic pipe and extruder for carrying out said method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3931614A DE3931614A1 (de) 1989-09-22 1989-09-22 Verfahren zur herstellung eines grosskalibrigen kunststoffrohres und strangpresswerkzeug fuer die durchfuehrung des verfahrens

Publications (2)

Publication Number Publication Date
DE3931614A1 true DE3931614A1 (de) 1991-04-11
DE3931614C2 DE3931614C2 (enExample) 1993-07-08

Family

ID=6389949

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3931614A Granted DE3931614A1 (de) 1989-09-22 1989-09-22 Verfahren zur herstellung eines grosskalibrigen kunststoffrohres und strangpresswerkzeug fuer die durchfuehrung des verfahrens

Country Status (13)

Country Link
EP (1) EP0418760B1 (enExample)
JP (1) JPH03205137A (enExample)
AT (1) ATE131770T1 (enExample)
AU (1) AU633362B2 (enExample)
CA (1) CA2025995C (enExample)
DE (1) DE3931614A1 (enExample)
ES (1) ES2080773T3 (enExample)
FI (1) FI904665A7 (enExample)
GR (1) GR3019367T3 (enExample)
NO (1) NO904089L (enExample)
PT (1) PT95370B (enExample)
RU (1) RU1823818C (enExample)
ZA (1) ZA907575B (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19806424A1 (de) * 1998-02-17 1999-08-19 Hdw Isoliertechnik Gmbh Verfahren zur Herstellung von Wabenmaterial und Wabenmaterial für Transparente Wärmedämmung

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4117221C2 (de) * 1991-05-27 1996-02-22 Schueco Int Kg Verfahren und Vorrichtung zum Herstellen von strangförmigen Hohlkammerprofilen aus thermoplastischem Werkstoff
FI95219C (sv) * 1992-04-30 1996-01-10 Kwh Pipe Ab Oy Svetsningsförfarande vid framställning av spirallindat rör och svetshuvud för utförande av förfarandet
FR2708327B1 (fr) * 1993-07-01 1995-10-13 Hutchinson Profilé tubulaire, à usage de joint d'étanchéité, de silencieux ou de conduit flexible pour véhicule automobile.
EP0698471B1 (de) * 1994-08-12 2001-11-07 Heinz Grösswang Strangpresswerkzeugkopf
US6105649A (en) * 1998-09-30 2000-08-22 Jerry C. Levingston Pipe extrusion apparatus including winding a hollow profile
DE102008063478A1 (de) 2008-12-17 2010-07-08 Audi Ag Vorrichtung zur Abkühlung von Hohlprofilbauteilen
FI124400B (en) * 2012-11-20 2014-08-15 Uponor Infra Oy Method and apparatus for making spirally wound and welded pipe
UA115587C2 (uk) 2015-10-09 2017-11-27 Олександр Миколайович Березін Спіральношовний полімерний виріб із стільниковою стінкою (варіанти) та довгомірний порожнистий термопластичний профіль для його виробництва
JP6911067B2 (ja) * 2019-02-19 2021-07-28 タキロンシーアイシビル株式会社 継手構造、液輸送管、および、液輸送管の接続方法
CN113954329B (zh) * 2021-11-10 2023-12-15 重庆金山洋生管道有限公司 大口径加筋管加工设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1131433A (fr) * 1953-12-30 1957-02-21 Matières en feuilles, procédés et machines pour leur fabrication
DE2308418B2 (de) * 1972-06-21 1976-04-08 Petzetakis, Aristovoulos George, Moschaton, Piräus (Griechenland) Verfahren und vorrichtung zum herstellen eines insbesondere grosskalibrigen rohres aus thermoplastischem kunststoff
DE2613386A1 (de) * 1976-03-29 1977-10-13 Gideon Gilead Verfahren zur herstellung eines kunststoffrohres

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL22357A (en) * 1963-11-22 1968-04-25 Petzetakis Aristovoulos George Calibration of tubes
US3443593A (en) * 1967-07-24 1969-05-13 Mount Hope Machinery Ltd Hydrodynamically balanced rotary valve
US3825641A (en) * 1971-06-04 1974-07-23 L Barnett Method of forming multiple passageway plastic conduit
DE2506517C3 (de) * 1975-02-15 1978-03-30 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Vorrichtung zur Flüssigkeits-Innenkühlung von stranggepreßten Rohren oder Schläuchen
DE2613385C2 (de) * 1976-03-29 1977-11-03 Siemens AG, 1000 Berlin und 8000 München HF-Prüfeinrichtung für installierte Koaxial-Kabelstrecken
DE8704071U1 (de) * 1987-03-19 1987-04-30 M. Stükerjürgen Kunststoffwerk GmbH & Co KG, 4835 Rietberg Band zum wendelförmigen Wickeln von Rohren
DE8803551U1 (de) * 1988-03-16 1988-05-26 RKM Rose Kabelmontage GmbH & Co KG, 6108 Weiterstadt Vorrichtung zur Wanddurchführung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1131433A (fr) * 1953-12-30 1957-02-21 Matières en feuilles, procédés et machines pour leur fabrication
DE2308418B2 (de) * 1972-06-21 1976-04-08 Petzetakis, Aristovoulos George, Moschaton, Piräus (Griechenland) Verfahren und vorrichtung zum herstellen eines insbesondere grosskalibrigen rohres aus thermoplastischem kunststoff
DE2613386A1 (de) * 1976-03-29 1977-10-13 Gideon Gilead Verfahren zur herstellung eines kunststoffrohres

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DE-Z: Kunststoffe, 1975, S. 186-190 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19806424A1 (de) * 1998-02-17 1999-08-19 Hdw Isoliertechnik Gmbh Verfahren zur Herstellung von Wabenmaterial und Wabenmaterial für Transparente Wärmedämmung

Also Published As

Publication number Publication date
PT95370A (pt) 1992-05-29
AU633362B2 (en) 1993-01-28
NO904089D0 (no) 1990-09-19
JPH03205137A (ja) 1991-09-06
CA2025995C (en) 2001-01-16
NO904089L (no) 1991-03-25
FI904665A0 (fi) 1990-09-21
FI904665A7 (fi) 1991-03-23
DE3931614C2 (enExample) 1993-07-08
AU6300390A (en) 1991-03-28
RU1823818C (ru) 1993-06-23
EP0418760B1 (de) 1995-12-20
ZA907575B (en) 1991-07-31
ATE131770T1 (de) 1996-01-15
ES2080773T3 (es) 1996-02-16
EP0418760A2 (de) 1991-03-27
PT95370B (pt) 1997-06-30
GR3019367T3 (en) 1996-06-30
CA2025995A1 (en) 1991-03-23
EP0418760A3 (en) 1991-11-13

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