DE2313204B2 - Verfahren zur herstellung optischer wellenleiter aus glas - Google Patents

Verfahren zur herstellung optischer wellenleiter aus glas

Info

Publication number
DE2313204B2
DE2313204B2 DE19732313204 DE2313204A DE2313204B2 DE 2313204 B2 DE2313204 B2 DE 2313204B2 DE 19732313204 DE19732313204 DE 19732313204 DE 2313204 A DE2313204 A DE 2313204A DE 2313204 B2 DE2313204 B2 DE 2313204B2
Authority
DE
Germany
Prior art keywords
refractive index
layer
glass
composition
waveguide
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.)
Ceased
Application number
DE19732313204
Other languages
German (de)
English (en)
Other versions
DE2313204A1 (de
Inventor
Peter Charles Painted Post N.Y. Schultz (V.StA.)
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.)
Corning Glass Works
Original Assignee
Corning Glass Works
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 Corning Glass Works filed Critical Corning Glass Works
Publication of DE2313204A1 publication Critical patent/DE2313204A1/de
Publication of DE2313204B2 publication Critical patent/DE2313204B2/de
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/028—Optical fibres with cladding with or without a coating with core or cladding having graded refractive index
    • G02B6/0281—Graded index region forming part of the central core segment, e.g. alpha profile, triangular, trapezoidal core
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/01413—Reactant delivery systems
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/01446—Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/01466—Means for changing or stabilising the diameter or form of tubes or rods
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/01466—Means for changing or stabilising the diameter or form of tubes or rods
    • C03B37/01473—Collapsing
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
    • C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/06—Doped silica-based glasses
    • C03B2201/30—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/06—Doped silica-based glasses
    • C03B2201/30—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi
    • C03B2201/31—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi doped with germanium
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/06—Doped silica-based glasses
    • C03B2201/30—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi
    • C03B2201/32—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi doped with aluminium
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/06—Doped silica-based glasses
    • C03B2201/30—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi
    • C03B2201/34—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi doped with rare earth metals, i.e. with Sc, Y or lanthanides, e.g. for laser-amplifiers
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/06—Doped silica-based glasses
    • C03B2201/30—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi
    • C03B2201/40—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi doped with transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/06—Doped silica-based glasses
    • C03B2201/30—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi
    • C03B2201/40—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi doped with transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn
    • C03B2201/42—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi doped with transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn doped with titanium
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00—Fibre product details, e.g. structure, shape
    • C03B2203/10—Internal structure or shape details
    • C03B2203/22—Radial profile of refractive index, composition or softening point
    • C03B2203/26—Parabolic or graded index [GRIN] core profile
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/12—Drawing solid optical fibre directly from a hollow preform
    • C03B2205/16—Drawing solid optical fibre directly from a hollow preform the drawn fibre consisting of circularly symmetric core and clad
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/80—Feeding the burner or the burner-heated deposition site
    • C03B2207/85—Feeding the burner or the burner-heated deposition site with vapour generated from liquid glass precursors, e.g. directly by heating the liquid
    • C03B2207/86—Feeding the burner or the burner-heated deposition site with vapour generated from liquid glass precursors, e.g. directly by heating the liquid by bubbling a gas through the liquid

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Thermal Sciences (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Glass Compositions (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Glass Melting And Manufacturing (AREA)
DE19732313204 1972-03-30 1973-03-16 Verfahren zur herstellung optischer wellenleiter aus glas Ceased DE2313204B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US00239496A US3826560A (en) 1972-03-30 1972-03-30 Method of forming a light focusing fiber waveguide
AT608373A AT360192B (de) 1972-03-30 1973-07-10 Verfahren zur herstellung von licht- fokussierenden, optischen gegenstaenden mit in radialer richtung unterschiedlicher zusammen- setzung

Publications (2)

Publication Number Publication Date
DE2313204A1 DE2313204A1 (de) 1973-10-18
DE2313204B2 true DE2313204B2 (de) 1977-12-08

Family

ID=25602776

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19732313204 Ceased DE2313204B2 (de) 1972-03-30 1973-03-16 Verfahren zur herstellung optischer wellenleiter aus glas

Country Status (8)

Country Link
US (1) US3826560A (US07413550-20080819-C00001.png)
JP (1) JPS5713841B2 (US07413550-20080819-C00001.png)
AT (1) AT360192B (US07413550-20080819-C00001.png)
CA (1) CA995072A (US07413550-20080819-C00001.png)
DE (1) DE2313204B2 (US07413550-20080819-C00001.png)
FR (1) FR2178172B1 (US07413550-20080819-C00001.png)
GB (1) GB1424694A (US07413550-20080819-C00001.png)
NL (1) NL171695C (US07413550-20080819-C00001.png)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0018068A1 (en) * 1979-03-01 1980-10-29 Corning Glass Works Adjustable vapour deposition apparatus
WO1990010596A1 (en) * 1989-03-15 1990-09-20 Tsl Group Plc Improved vitreous silica products

Families Citing this family (68)

* Cited by examiner, † Cited by third party
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JPS4983453A (US07413550-20080819-C00001.png) * 1972-12-14 1974-08-10
US3923484A (en) * 1974-01-11 1975-12-02 Corning Glass Works Flame method of producing glass
US4217027A (en) * 1974-02-22 1980-08-12 Bell Telephone Laboratories, Incorporated Optical fiber fabrication and resulting product
NL165134B (nl) * 1974-04-24 1980-10-15 Nippon Telegraph & Telephone Werkwijze voor de vervaardiging van een staaf als tussenprodukt voor de vervaardiging van een optische vezel en werkwijze voor de vervaardiging van een optische vezel uit zulk een tussenprodukt.
DE2419786B2 (de) * 1974-04-24 1979-09-06 Jenaer Glaswerk Schott & Gen., 6500 Mainz Lichtleiter
US3904268A (en) * 1974-11-15 1975-09-09 Corning Glass Works Optical waveguide having optimal index gradient
US4135901A (en) * 1974-12-18 1979-01-23 Sumitomo Electric Industries, Ltd. Method of manufacturing glass for optical waveguide
JPS5180240A (ja) * 1975-01-08 1976-07-13 Sumitomo Electric Industries Hikaridensoyofuaibaano seizohoho
JPS5180241A (ja) * 1975-01-08 1976-07-13 Sumitomo Electric Industries Hikaridensoyofuaibaano seizohoho
CA1034818A (en) * 1975-04-16 1978-07-18 Northern Electric Company Limited Manufacture of optical fibres
US4140505A (en) * 1976-07-12 1979-02-20 International Standard Electric Corporation Method of manufacturing a limited mode optical fiber
DE2538313C3 (de) * 1975-08-28 1981-11-05 Heraeus Quarzschmelze Gmbh, 6450 Hanau Verfahren zur Herstellung eines Vorproduktes für die Erzeugung eines optischen, selbstfokussierenden Lichtleiters
US4339173A (en) 1975-09-08 1982-07-13 Corning Glass Works Optical waveguide containing P2 O5 and GeO2
US3966446A (en) * 1975-10-23 1976-06-29 Bell Telephone Laboratories, Incorporated Axial fabrication of optical fibers
US4038062A (en) * 1976-03-25 1977-07-26 Bell Telephone Laboratories, Incorporated Method and apparatus for introducing geometrical perturbations in optical fiber waveguides
JPS5838367B2 (ja) * 1976-04-24 1983-08-23 株式会社フジクラ 光伝送用フアイバの製造方法
JPS53114818A (en) * 1977-03-17 1978-10-06 Shinetsu Chemical Co Production of quartz glass
CA1106710A (en) * 1977-06-22 1981-08-11 Michael G. Blankenship Method of making optical devices
US4334903A (en) * 1977-08-29 1982-06-15 Bell Telephone Laboratories, Incorporated Optical fiber fabrication
US4358181A (en) * 1977-09-29 1982-11-09 Corning Glass Works Gradient index optical waveguide and method of making
US4212663A (en) * 1978-01-26 1980-07-15 Corning Glass Works Reactants delivery system for optical waveguide manufacturing
US4157906A (en) * 1978-02-21 1979-06-12 Corning Glass Works Method of drawing glass optical waveguides
US4478622A (en) * 1978-03-03 1984-10-23 Corning Glass Works Method of making multicomponent optical waveguide having index gradient
US4478623A (en) * 1979-01-02 1984-10-23 Corning Glass Works Method of making optimal index profile for multicomponent nonlinear glass optical waveguide
US4406517A (en) * 1979-01-02 1983-09-27 Corning Glass Works Optical waveguide having optimal index profile for multicomponent nonlinear glass
US4203744A (en) * 1979-01-02 1980-05-20 Corning Glass Works Method of making nitrogen-doped graded index optical waveguides
US4257797A (en) * 1979-01-05 1981-03-24 Western Electric Optical fiber fabrication process
CA1139621A (en) * 1979-01-05 1983-01-18 Matthew J. Andrejco Optical fiber fabrication process
US4220460A (en) * 1979-02-05 1980-09-02 Western Electric Company, Inc. Vapor delivery system and method
US4278458A (en) * 1979-02-07 1981-07-14 Bell Telephone Laboratories, Incorporated Optical fiber fabrication method and apparatus
US4191545A (en) * 1979-03-02 1980-03-04 Bell Telephone Laboratories, Incorporated Optical fiber fabrication process
US4235829A (en) * 1979-05-07 1980-11-25 Western Electric Company, Inc. Vapor delivery system and method of maintaining a constant level of liquid therein
US4298366A (en) * 1979-07-13 1981-11-03 Times Fiber Communications, Inc. Graded start rods for the production of optical waveguides
US4341541A (en) * 1979-07-13 1982-07-27 Times Fiber Communications, Inc. Process for the production of optical fiber
DE3037491C2 (de) * 1979-10-04 1983-10-27 Nippon Telegraph & Telephone Public Corp., Tokyo Verfahren zur Herstellung einer Glasvorform für optische Fasern
US4344670A (en) * 1980-05-01 1982-08-17 Corning Glass Works Optical waveguide soot preform with reduced inner layer stress and method of making
US4304583A (en) * 1980-06-02 1981-12-08 Corning Glass Works Process for drying optical waveguide preforms
JPS5717437A (en) * 1980-07-01 1982-01-29 Nec Corp Manufacture of optical fiber
IT1145157B (it) * 1981-06-22 1986-11-05 Cselt Centro Studi Lab Telecom Procedimento e dispositivo per la deidrogenazione in linea di preforme per fibre ottiche
US4443239A (en) * 1982-05-20 1984-04-17 International Telephone And Telegraph Corporation Fabrication of optical waveguides using slurry deposition
US4486212A (en) * 1982-09-29 1984-12-04 Corning Glass Works Devitrification resistant flame hydrolysis process
US4639079A (en) * 1982-09-29 1987-01-27 Corning Glass Works Optical fiber preform and method
US4576622A (en) * 1983-11-28 1986-03-18 Lothar Jung Manufacture of preforms for energy transmitting fibers
US4596589A (en) * 1984-02-09 1986-06-24 Perry Gregory A Method for producing a single mode fiber preform
US4582480A (en) * 1984-08-02 1986-04-15 At&T Technologies, Inc. Methods of and apparatus for vapor delivery control in optical preform manufacture
CA1260684A (en) * 1985-03-19 1989-09-26 Koichi Abe Optical waveguide manufacture
US4859375A (en) * 1986-12-29 1989-08-22 Air Products And Chemicals, Inc. Chemical refill system
US4684384A (en) * 1986-02-27 1987-08-04 Corning Glass Works Conveyor deposition method and apparatus for making optical fiber preforms
US4772305A (en) * 1986-06-30 1988-09-20 Corning Glass Works Process for dewatering porous glass
DE3765887D1 (de) * 1986-08-29 1990-12-06 American Telephone & Telegraph Verfahren zum bekleiden von optischen vorformen mit glasruss.
US4750926A (en) * 1987-08-07 1988-06-14 Corning Glass Works Method of making precision shaped apertures in glass
US5011566A (en) * 1989-03-15 1991-04-30 The United States Of America As Represented By The Secretary Of The Air Force Method of manufacturing microscopic tube material
US5043002A (en) 1990-08-16 1991-08-27 Corning Incorporated Method of making fused silica by decomposing siloxanes
FR2728888B1 (fr) * 1994-12-29 1997-01-31 Alcatel Cable Procede d'obtention de preforme de fibre optique employant la recharge plasma
US6474107B1 (en) * 1996-12-02 2002-11-05 Franklin W. Dabby Fluorinating an optical fiber preform in a pure aluminum oxide muffle tube
US6161398A (en) * 1998-04-09 2000-12-19 Lucent Technologies, Inc. Methods of and systems for vapor delivery control in optical preform manufacture
US6192713B1 (en) 1998-06-30 2001-02-27 Sdl, Inc. Apparatus for the manufacture of glass preforms
KR100890981B1 (ko) * 2000-10-26 2009-03-27 네오포토닉스 코포레이션 모놀리식 광학 구조체, 이 모놀리식 광학 구조체의 형성 방법, 가요성 광섬유, 광섬유 형성 방법, 및 광섬유 예비 성형체
CN1539090A (zh) * 2001-04-12 2004-10-20 �ź㴫 高折射率差纤维波导及其应用
JP2003171137A (ja) * 2001-11-30 2003-06-17 Fujikura Ltd 光ファイバ母材の製造方法
KR100474565B1 (ko) * 2002-08-30 2005-03-10 삼성전자주식회사 소스 가스 공급 방법 및 장치
US7011299B2 (en) * 2002-09-16 2006-03-14 Matheson Tri-Gas, Inc. Liquid vapor delivery system and method of maintaining a constant level of fluid therein
AU2003295929A1 (en) * 2002-11-22 2004-06-18 Omniguide, Inc. Dielectric waveguide and method of making the same
US20050092030A1 (en) * 2003-10-31 2005-05-05 Jitendra Balakrishnan Method and apparatus for depositing glass soot
US7536076B2 (en) * 2006-06-21 2009-05-19 Corning Incorporated Optical fiber containing alkali metal oxide
US20080050086A1 (en) * 2006-08-24 2008-02-28 Scott Robertson Bickham Optical fiber containing alkali metal oxide
DE602008006371D1 (de) * 2007-02-28 2011-06-01 Corning Inc Minimierung der deformationen von glasfaserstäben/vorformen während der konsolidierung
JP5995923B2 (ja) * 2014-08-06 2016-09-21 古河電気工業株式会社 光ファイバ母材および光ファイバの製造方法

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GB538995A (en) * 1939-04-22 1941-08-25 Corning Glass Works Improved process of making sealing glasses and seals for quartz lamps
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US3271179A (en) * 1962-09-24 1966-09-06 Temescal Metallurgical Corp Method for the manufacture of an optical filter
US3614197A (en) * 1967-04-27 1971-10-19 Semiconductor Res Found Solid optical wave guide having a radially varying refractive index
GB1223805A (en) * 1969-05-29 1971-03-03 Standard Telephones Cables Ltd Glass tube manufacture
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0018068A1 (en) * 1979-03-01 1980-10-29 Corning Glass Works Adjustable vapour deposition apparatus
WO1990010596A1 (en) * 1989-03-15 1990-09-20 Tsl Group Plc Improved vitreous silica products
GB2245553A (en) * 1989-03-15 1992-01-08 Tsl Group Plc Improved vitreous silica products
GB2245553B (en) * 1989-03-15 1992-08-19 Tsl Group Plc Improved vitreous silica products

Also Published As

Publication number Publication date
GB1424694A (en) 1976-02-11
NL7304370A (US07413550-20080819-C00001.png) 1973-10-02
NL171695B (nl) 1982-12-01
NL171695C (nl) 1983-05-02
DE2313204A1 (de) 1973-10-18
US3826560A (en) 1974-07-30
JPS5713841B2 (US07413550-20080819-C00001.png) 1982-03-19
FR2178172A1 (US07413550-20080819-C00001.png) 1973-11-09
ATA608373A (de) 1980-05-15
JPS4910055A (US07413550-20080819-C00001.png) 1974-01-29
FR2178172B1 (US07413550-20080819-C00001.png) 1976-09-10
CA995072A (en) 1976-08-17
AT360192B (de) 1980-12-29

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