JPS5410314A - Coated sintered carbide body and method of making same - Google Patents

Coated sintered carbide body and method of making same

Info

Publication number
JPS5410314A
JPS5410314A JP6822278A JP6822278A JPS5410314A JP S5410314 A JPS5410314 A JP S5410314A JP 6822278 A JP6822278 A JP 6822278A JP 6822278 A JP6822278 A JP 6822278A JP S5410314 A JPS5410314 A JP S5410314A
Authority
JP
Japan
Prior art keywords
making same
carbide body
sintered carbide
coated sintered
coated
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
JP6822278A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6115149B2 (US06590051-20030708-C00023.png
Inventor
Kaaru Herumaa Sumisu Urufu
Nirusu Rindoshiyutoreemu Yan
Mantoru Harorudo
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.)
Sandvik AB
Original Assignee
Sandvik AB
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 Sandvik AB filed Critical Sandvik AB
Publication of JPS5410314A publication Critical patent/JPS5410314A/ja
Publication of JPS6115149B2 publication Critical patent/JPS6115149B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • C23C30/005—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process on hard metal substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/148—Composition of the cutting inserts
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
    • C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
    • C23C16/40—Oxides
    • C23C16/403—Oxides of aluminium, magnesium or beryllium
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles

Landscapes

  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Vapour Deposition (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Powder Metallurgy (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Chemically Coating (AREA)
  • Compositions Of Oxide Ceramics (AREA)
JP6822278A 1977-06-09 1978-06-06 Coated sintered carbide body and method of making same Granted JPS5410314A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7706706A SE406090B (sv) 1977-06-09 1977-06-09 Belagd hardmetallkropp samt sett att framstalla en dylik kropp

Publications (2)

Publication Number Publication Date
JPS5410314A true JPS5410314A (en) 1979-01-25
JPS6115149B2 JPS6115149B2 (US06590051-20030708-C00023.png) 1986-04-22

Family

ID=20331555

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6822278A Granted JPS5410314A (en) 1977-06-09 1978-06-06 Coated sintered carbide body and method of making same

Country Status (13)

Country Link
US (2) US4180400A (US06590051-20030708-C00023.png)
JP (1) JPS5410314A (US06590051-20030708-C00023.png)
AT (1) AT366721B (US06590051-20030708-C00023.png)
BR (1) BR7803700A (US06590051-20030708-C00023.png)
CA (1) CA1133524A (US06590051-20030708-C00023.png)
CH (1) CH640274A5 (US06590051-20030708-C00023.png)
DE (1) DE2825009C2 (US06590051-20030708-C00023.png)
ES (1) ES470609A1 (US06590051-20030708-C00023.png)
FR (1) FR2393852A1 (US06590051-20030708-C00023.png)
GB (1) GB2006727B (US06590051-20030708-C00023.png)
IT (1) IT1096522B (US06590051-20030708-C00023.png)
MX (1) MX149305A (US06590051-20030708-C00023.png)
SE (1) SE406090B (US06590051-20030708-C00023.png)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5624134A (en) * 1979-08-03 1981-03-07 Soodanitsuka Kk Cutting method for high molecular compound foamed material
JPS59162270A (ja) * 1983-03-04 1984-09-13 Sumitomo Electric Ind Ltd 表面被覆方法
JPS59219463A (ja) * 1983-05-27 1984-12-10 Sumitomo Electric Ind Ltd Ａｌ２Ｏ３コーティング膜を有する切削工具の製造法
US4490191A (en) * 1981-12-16 1984-12-25 General Electric Company Coated product and process
JPS60238481A (ja) * 1984-05-14 1985-11-27 Sumitomo Electric Ind Ltd 多重層被覆超硬合金
JPWO2006046498A1 (ja) * 2004-10-29 2008-05-22 住友電工ハードメタル株式会社 表面被覆切削工具
JP2009083008A (ja) * 2007-09-28 2009-04-23 Mitsubishi Materials Corp 硬質被覆層が高速重切削加工ですぐれた耐チッピング性と耐摩耗性を発揮する表面被覆切削工具
WO2020158425A1 (ja) * 2019-01-30 2020-08-06 住友電工ハードメタル株式会社 切削工具及びその製造方法

Families Citing this family (78)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE417618B (sv) * 1979-01-22 1981-03-30 Sandvik Ab Hardmetallkropp med slitstarkt ytskikt
US4268569A (en) * 1979-02-07 1981-05-19 General Electric Company Coating underlayers
IL58548A (en) * 1979-10-24 1983-07-31 Iscar Ltd Sintered hard metal products having a multi-layer wearresistant coating
JPS5716161A (en) * 1980-07-02 1982-01-27 Ngk Spark Plug Co Ltd Preparation of coating tip for cutting
SE430261B (sv) * 1982-01-26 1983-10-31 Santrade Ltd Sett att framstella belagd hardmaterialkropp
US4619866A (en) * 1980-07-28 1986-10-28 Santrade Limited Method of making a coated cemented carbide body and resulting body
SE425978B (sv) * 1980-07-28 1982-11-29 Sandvik Ab Sett att framstella en formkropp bestaende av ett substrat samt minst ett tunt slitstarkt ytskikt
USRE32111E (en) * 1980-11-06 1986-04-15 Fansteel Inc. Coated cemented carbide bodies
US4357382A (en) * 1980-11-06 1982-11-02 Fansteel Inc. Coated cemented carbide bodies
US4440547A (en) * 1982-05-20 1984-04-03 Gte Laboratories Incorporated Alumina coated silicon nitride cutting tools
SE8205274L (sv) * 1982-09-15 1984-03-16 Santrade Ltd Sker samt metod for tillverkning av detsamma
JPS6011288A (ja) * 1983-06-30 1985-01-21 三菱マテリアル株式会社 表面被覆サイアロン基セラミツクス工具部材
JPS61221369A (ja) * 1985-03-27 1986-10-01 Sumitomo Electric Ind Ltd 被覆超硬合金部材
US4708037A (en) 1985-11-18 1987-11-24 Gte Laboratories Incorporated Coated cemented carbide tool for steel roughing applications and methods for machining
US4698266A (en) 1985-11-18 1987-10-06 Gte Laboratories Incorporated Coated cemented carbide tool for steel roughing applications and methods for machining
DE3544975C1 (de) * 1985-12-19 1992-09-24 Krupp Gmbh Verfahren zur Herstellung eines beschichteten Formkoerpers
JPH0436273Y2 (US06590051-20030708-C00023.png) * 1986-04-04 1992-08-27
US4943450A (en) 1987-01-20 1990-07-24 Gte Laboratories Incorporated Method for depositing nitride-based composite coatings by CVD
US4810530A (en) * 1986-08-25 1989-03-07 Gte Laboratories Incorporated Method of coating metal carbide nitride, and carbonitride whiskers with metal carbides, nitrides, carbonitrides, or oxides
US4988564A (en) * 1986-08-25 1991-01-29 Gte Laboratories Incorporated Metal carbide, nitride, or carbonitride whiskers coated with metal carbides, nitrides, carbonitrides, or oxides
US5401694A (en) * 1987-01-13 1995-03-28 Lanxide Technology Company, Lp Production of metal carbide articles
US5254509A (en) * 1987-01-13 1993-10-19 Lanxide Technology Company, Lp Production of metal carbide articles
CA1329067C (en) * 1987-01-20 1994-05-03 Vinod K. Sarin Method for depositing composite coatings
US4749629A (en) 1987-01-20 1988-06-07 Gte Laboratories Ultrathin laminated oxide coatings and methods
US4751109A (en) 1987-01-20 1988-06-14 Gte Laboratories Incorporated A process for depositing a composite ceramic coating on a hard ceramic substrate
CA1328580C (en) * 1987-01-20 1994-04-19 Gte Valenite Corporation Composite coatings
US4745010A (en) 1987-01-20 1988-05-17 Gte Laboratories Incorporated Process for depositing a composite ceramic coating on a cemented carbide substrate
US4892792A (en) * 1987-10-01 1990-01-09 Gte Laboratories Incorporated A1N coated silicon nitride based cutting tools
US4950558A (en) 1987-10-01 1990-08-21 Gte Laboratories Incorporated Oxidation resistant high temperature thermal cycling resistant coatings on silicon-based substrates and process for the production thereof
US5079089A (en) * 1988-07-28 1992-01-07 Nippon Steel Corporation Multi ceramic layer-coated metal plate and process for manufacturing same
US5192410A (en) * 1988-07-28 1993-03-09 Nippon Steel Corporation Process for manufacturing multi ceramic layer-coated metal plate
US4984940A (en) * 1989-03-17 1991-01-15 Kennametal Inc. Multilayer coated cemented carbide cutting insert
US5304417A (en) * 1989-06-02 1994-04-19 Air Products And Chemicals, Inc. Graphite/carbon articles for elevated temperature service and method of manufacture
SE464818B (sv) * 1989-06-16 1991-06-17 Sandvik Ab Belagt skaer foer skaerande bearbetning
EP0408535B1 (en) * 1989-07-13 1994-04-06 Seco Tools Ab Multi-oxide coated carbide body and method of producing the same
US5310607A (en) * 1991-05-16 1994-05-10 Balzers Aktiengesellschaft Hard coating; a workpiece coated by such hard coating and a method of coating such workpiece by such hard coating
SE9101953D0 (sv) * 1991-06-25 1991-06-25 Sandvik Ab A1203 coated sintered body
SE502223C2 (sv) 1994-01-14 1995-09-18 Sandvik Ab Sätt och alster vid beläggning av ett skärande verktyg med ett aluminiumoxidskikt
CA2149567C (en) * 1994-05-31 2000-12-05 William C. Russell Coated cutting tool and method of making same
US5545490A (en) * 1994-06-21 1996-08-13 Mitsubishi Materials Corporation Surface coated cutting tool
SE509201C2 (sv) * 1994-07-20 1998-12-14 Sandvik Ab Aluminiumoxidbelagt verktyg
SE514181C2 (sv) * 1995-04-05 2001-01-15 Sandvik Ab Belagt hårmetallskär för fräsning av gjutjärn
US5693417A (en) * 1995-05-22 1997-12-02 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Vacuum-coated compound body and process for its production
SE514177C2 (sv) * 1995-07-14 2001-01-15 Sandvik Ab Belagt hårdmetallskär för intermittent bearbetning i låglegerat stål
SE514695C2 (sv) * 1995-07-14 2001-04-02 Sandvik Ab Skärverktyg belagt med aluminiumoxid och sätt för dess framställning
US5786069A (en) 1995-09-01 1998-07-28 Sandvik Ab Coated turning insert
EP0786536B1 (en) * 1996-01-24 2003-05-07 Mitsubishi Materials Corporation Coated cutting tool
WO2000017416A1 (de) * 1998-09-24 2000-03-30 Widia Gmbh Verbundwerkstoff-überzug und verfahren zu seiner herstellung
EP1103635B1 (en) * 1999-11-25 2004-08-11 Seco Tools Ab Coated cutting insert for milling and turning applications
US6472060B1 (en) 2000-01-19 2002-10-29 Seco Tools Ab Coated body with nanocrystalline CVD coating for enhanced edge toughness and reduced friction
US6863925B1 (en) * 2000-09-26 2005-03-08 General Electric Company Method for vapor phase aluminiding including a modifying element
SE522736C2 (sv) * 2001-02-16 2004-03-02 Sandvik Ab Aluminiumoxidbelagt skärverktyg och metod för att framställa detsamma
SE522735C2 (sv) * 2001-05-30 2004-03-02 Sandvik Ab Aluminiumoxidbelagt skärverktyg
DE10141696A1 (de) * 2001-08-25 2003-03-13 Bosch Gmbh Robert Verfahren zur Erzeugung einer nanostruktuierten Funktionsbeschichtung und damit herstellbare Beschichtung
WO2003064718A2 (en) * 2002-01-29 2003-08-07 Sulzer Metco (Us) Inc. Method for selectively coating a portion of a substrate with a gas-carried substance
EP2865784A1 (en) * 2002-08-08 2015-04-29 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Process for producing alumina coating composed mainly of alpha-type crystal structure
WO2004033751A1 (de) * 2002-10-07 2004-04-22 Kennametal Widia Gmbh & Co. Kg Verbundwerkstoff
SE526526C3 (sv) * 2003-04-01 2005-10-26 Sandvik Intellectual Property Sätt att belägga skär med A1203 samt ett med A1203 belagt skärverktyg
SE527349C2 (sv) * 2003-04-24 2006-02-14 Seco Tools Ab Skär med beläggning av skikt av MTCVD-Ti (C,N) med styrd kornstorlek och morfologi och metod för att belägga skäret
SE527346C2 (sv) 2003-04-24 2006-02-14 Seco Tools Ab Skär med beläggning av skikt av MTCVD-Ti (C,N) med styrd kornstorlek och morfologi och metod för att belägga skäret
EP1536041B1 (en) * 2003-11-25 2008-05-21 Mitsubishi Materials Corporation Coated cermet cutting tool with a chipping resistant, hard coating layer
US7273665B2 (en) * 2003-12-22 2007-09-25 Mitsubishi Materials Corporation Surface-coated cermet cutting tool with hard coating layer having excellent chipping resistance
US7160578B2 (en) * 2004-03-10 2007-01-09 Pilkington North America Method for depositing aluminum oxide coatings on flat glass
SE529144C2 (sv) * 2005-04-18 2007-05-15 Sandvik Intellectual Property Skär belagt med kompositoxidskikt
JP5238687B2 (ja) * 2006-04-21 2013-07-17 コムコン・アーゲー 被覆物
JP5234925B2 (ja) * 2008-04-03 2013-07-10 株式会社神戸製鋼所 硬質皮膜およびその形成方法ならびに硬質皮膜被覆部材
TWI493060B (zh) * 2010-08-19 2015-07-21 Hon Hai Prec Ind Co Ltd 銀白色膜結構及其鍍膜方法
US9371580B2 (en) 2013-03-21 2016-06-21 Kennametal Inc. Coated body wherein the coating scheme includes a coating layer of TiAl2O3 and method of making the same
DE112014001520B4 (de) 2013-03-21 2023-06-15 Kennametal Inc. Beschichtungen für Schneidwerkzeuge
CN105051248B (zh) 2013-03-21 2018-03-20 钴碳化钨硬质合金公司 用于切削工具的涂层
US9427808B2 (en) * 2013-08-30 2016-08-30 Kennametal Inc. Refractory coatings for cutting tools
US9719175B2 (en) 2014-09-30 2017-08-01 Kennametal Inc. Multilayer structured coatings for cutting tools
US9650712B2 (en) 2014-12-08 2017-05-16 Kennametal Inc. Inter-anchored multilayer refractory coatings
US9650714B2 (en) 2014-12-08 2017-05-16 Kennametal Inc. Nanocomposite refractory coatings and applications thereof
ES2714791T3 (es) * 2016-07-01 2019-05-30 Walter Ag Herramienta de corte con capa de alúmina texturizada
KR102357946B1 (ko) 2017-08-17 2022-02-08 어플라이드 머티어리얼스, 인코포레이티드 올레핀 분리기가 없는 Li-이온 배터리
US11371150B2 (en) * 2020-01-04 2022-06-28 Kennametal Inc. Coating and coated cutting tool comprising the coating
WO2023242370A1 (en) 2022-06-15 2023-12-21 Oerlikon Surface Solutions Ag, Pfäffikon Forming tools coated with kappa-alumina

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US3261673A (en) * 1963-05-17 1966-07-19 Norton Co Oxide coated articles with metal undercoat
DE2265603C2 (de) * 1971-05-26 1983-02-03 General Electric Co., Schenectady, N.Y. Schneideinsatz mit einer nicht metallischen Zwischenschicht zwischen Grundkörper und Deckbeschichtung und Verfahren zu seiner Herstellung
CH540990A (fr) * 1971-07-07 1973-08-31 Battelle Memorial Institute Procédé pour augmenter la résistance à l'usure de la surface d'un outil de coupe
SE357984B (US06590051-20030708-C00023.png) * 1971-11-12 1973-07-16 Sandvik Ab
US3967035A (en) * 1973-03-12 1976-06-29 General Electric Company Coated cemented carbide product
DE2435989C2 (de) * 1974-07-26 1982-06-24 Fried. Krupp Gmbh, 4300 Essen Verfahren zur Herstellung eines verschleißfesten, beschichteten Hartmetallkörpers für Zerspanungszwecke
US4018631A (en) * 1975-06-12 1977-04-19 General Electric Company Coated cemented carbide product
FR2357321A1 (fr) * 1976-07-05 1978-02-03 Stellram Sa Revetement protecteur stratifie pour pieces d'usure et outils de coupe en metal dur
US4052530A (en) * 1976-08-09 1977-10-04 Materials Technology Corporation Co-deposited coating of aluminum oxide and titanium oxide and method of making same

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5624134A (en) * 1979-08-03 1981-03-07 Soodanitsuka Kk Cutting method for high molecular compound foamed material
US4490191A (en) * 1981-12-16 1984-12-25 General Electric Company Coated product and process
JPS59162270A (ja) * 1983-03-04 1984-09-13 Sumitomo Electric Ind Ltd 表面被覆方法
JPS59219463A (ja) * 1983-05-27 1984-12-10 Sumitomo Electric Ind Ltd Ａｌ２Ｏ３コーティング膜を有する切削工具の製造法
JPH0468388B2 (US06590051-20030708-C00023.png) * 1983-05-27 1992-11-02 Sumitomo Electric Industries
JPS60238481A (ja) * 1984-05-14 1985-11-27 Sumitomo Electric Ind Ltd 多重層被覆超硬合金
JPS626748B2 (US06590051-20030708-C00023.png) * 1984-05-14 1987-02-13 Sumitomo Electric Industries
JPWO2006046498A1 (ja) * 2004-10-29 2008-05-22 住友電工ハードメタル株式会社 表面被覆切削工具
US8012611B2 (en) 2004-10-29 2011-09-06 Sumitomo Electric Hardmetal Corp. Surface-coated cutting tool
JP2009083008A (ja) * 2007-09-28 2009-04-23 Mitsubishi Materials Corp 硬質被覆層が高速重切削加工ですぐれた耐チッピング性と耐摩耗性を発揮する表面被覆切削工具
WO2020158425A1 (ja) * 2019-01-30 2020-08-06 住友電工ハードメタル株式会社 切削工具及びその製造方法
JPWO2020158425A1 (ja) * 2019-01-30 2021-02-18 住友電工ハードメタル株式会社 切削工具及びその製造方法

Also Published As

Publication number Publication date
SE406090B (sv) 1979-01-22
JPS6115149B2 (US06590051-20030708-C00023.png) 1986-04-22
GB2006727A (en) 1979-05-10
FR2393852A1 (fr) 1979-01-05
IT7824305A0 (it) 1978-06-07
DE2825009A1 (de) 1978-12-14
MX149305A (es) 1983-10-14
SE7706706L (sv) 1978-12-10
BR7803700A (pt) 1979-03-13
CH640274A5 (de) 1983-12-30
US4180400A (en) 1979-12-25
GB2006727B (en) 1982-04-15
ATA419778A (de) 1979-11-15
ES470609A1 (es) 1979-10-01
IT1096522B (it) 1985-08-26
CA1133524A (en) 1982-10-12
DE2825009C2 (de) 1986-09-25
FR2393852B1 (US06590051-20030708-C00023.png) 1980-10-31
USRE31526E (en) 1984-02-28
AT366721B (de) 1982-05-10

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