JPS54101985A - Producing of nonwoven base plate for reinforcing carbon fiber - Google Patents

Producing of nonwoven base plate for reinforcing carbon fiber

Info

Publication number
JPS54101985A
JPS54101985A JP106479A JP106479A JPS54101985A JP S54101985 A JPS54101985 A JP S54101985A JP 106479 A JP106479 A JP 106479A JP 106479 A JP106479 A JP 106479A JP S54101985 A JPS54101985 A JP S54101985A
Authority
JP
Japan
Prior art keywords
producing
base plate
carbon fiber
reinforcing carbon
nonwoven base
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.)
Pending
Application number
JP106479A
Other languages
English (en)
Inventor
Jiyon Shiyaarin Aran
Uiriamu Higusu Moriisu
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.)
Dunlop Co Ltd
Original Assignee
Dunlop Co Ltd
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 Dunlop Co Ltd filed Critical Dunlop Co Ltd
Publication of JPS54101985A publication Critical patent/JPS54101985A/ja
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/71—Ceramic products containing macroscopic reinforcing agents
    • C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
    • C04B35/80—Fibres, filaments, whiskers, platelets, or the like
    • C04B35/83—Carbon fibres in a carbon matrix
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/026—Knitted fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/06—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
    • B32B9/007—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile comprising carbon, e.g. graphite, composite carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/047—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of fibres or filaments
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D04H1/4242—Carbon fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H5/00—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
    • D04H5/02—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by mechanical methods, e.g. needling
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H5/00—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
    • D04H5/08—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of fibres or yarns
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D69/02—Composition of linings ; Methods of manufacturing
    • F16D69/023—Composite materials containing carbon and carbon fibres or fibres made of carbonizable material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2313/00—Elements other than metals
    • B32B2313/04—Carbon
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/12—Discs; Drums for disc brakes
    • F16D65/125—Discs; Drums for disc brakes characterised by the material used for the disc body
    • F16D65/126—Discs; Drums for disc brakes characterised by the material used for the disc body the material being of low mechanical strength, e.g. carbon, beryllium; Torque transmitting members therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Composite Materials (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Inorganic Fibers (AREA)
  • Moulding By Coating Moulds (AREA)
JP106479A 1978-01-12 1979-01-11 Producing of nonwoven base plate for reinforcing carbon fiber Pending JPS54101985A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB118078 1978-01-12

Publications (1)

Publication Number Publication Date
JPS54101985A true JPS54101985A (en) 1979-08-10

Family

ID=9717546

Family Applications (1)

Application Number Title Priority Date Filing Date
JP106479A Pending JPS54101985A (en) 1978-01-12 1979-01-11 Producing of nonwoven base plate for reinforcing carbon fiber

Country Status (5)

Country Link
JP (1) JPS54101985A (ja)
AU (1) AU517708B2 (ja)
DE (1) DE2900938A1 (ja)
FR (1) FR2414574A1 (ja)
GB (1) GB2012671B (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5727746A (en) * 1980-07-25 1982-02-15 Toho Beslon Co Three dimensional fiber reinforcing composite material and its manufacture
JPS6360154A (ja) * 1986-08-28 1988-03-16 株式会社神戸製鋼所 不織布を用いた炭素／炭素複合材のプリフオ−ム体
JPS6360155A (ja) * 1986-08-28 1988-03-16 株式会社神戸製鋼所 不織布を原料とした炭素／炭素複合材の製造方法
JPH08209513A (ja) * 1994-08-05 1996-08-13 Amoco Corp 繊維強化された炭素及び黒鉛物品
JP2015190066A (ja) * 2014-03-27 2015-11-02 東邦テナックス株式会社 炭素繊維フェルト、その製造方法、及び液流通型電解槽

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5989375A (en) * 1979-12-21 1999-11-23 Bortz; David N. Friction controlling devices and methods of their manufacture
FR2506672A1 (fr) * 1981-06-02 1982-12-03 Lorraine Carbone Procede de fabrication de disques de frottement
FR2584106B1 (fr) * 1985-06-27 1988-05-13 Europ Propulsion Procede de fabrication de structures tridimensionnelles par aiguilletage de couches planes de materiau fibreux superposees et materiau fibreux utilise pour la mise en oeuvre du procede
US4790052A (en) * 1983-12-28 1988-12-13 Societe Europeenne De Propulsion Process for manufacturing homogeneously needled three-dimensional structures of fibrous material
GB8513609D0 (en) * 1985-05-30 1985-07-03 Otty M Making reinforced resinous sheet material
FR2587992B1 (fr) * 1985-10-02 1995-07-13 Europ Propulsion Materiau composite carbone-carbone pour pieces de friction, et son application aux dispositifs de freinage
US5388320A (en) 1987-01-27 1995-02-14 Aerospace Preforms Limited Production of shaped filamentary structures
US5882781A (en) * 1986-01-28 1999-03-16 Aerospace Preforms Limited Shaped fibrous fabric structure comprising multiple layers of fibrous material
GB8602003D0 (en) * 1986-01-28 1986-03-05 Lawton P G Carbonisable fibre assembly
GB8700805D0 (en) * 1987-01-15 1987-02-18 Dunlop Ltd Carbon fibre materials
US5705264A (en) * 1987-01-27 1998-01-06 Aerpspace Preforms Limited Production of shaped filamentary structures
US4983451A (en) * 1987-08-05 1991-01-08 Kabushiki Kaisha Kobe Seiko Sho Carbon fiber-reinforced carbon composite material and process for producing the same
FR2626294B1 (fr) * 1988-01-26 1990-07-13 Carbone Ind Procede de fabrication d'une structure fibreuse tridimensionnelle en vue de la realisation ulterieure d'une piece en un materiau composite et machine pour sa mise en oeuvre
RU2072012C1 (ru) * 1989-07-25 1997-01-20 Данлоп Лимитед Способ изготовления заготовки из углеродного волокна для композиционных материалов
US5217770A (en) * 1991-08-15 1993-06-08 The B. F. Goodrich Company Braided shaped filamentary structures and methods of making
CA2077130C (en) * 1991-09-04 2003-04-29 Edward Lee Morris Carbon fiber reinforced carbon/carbon composite and method of its manufacture
FR2686907B1 (fr) * 1992-02-05 1996-04-05 Europ Propulsion Procede d'elaboration de preformes fibreuses pour la fabrication de pieces en materiaux composites et produits obtenus par le procede.
US5392500A (en) * 1991-12-02 1995-02-28 Societe Europeenne De Propulsion Process for the manufacture of a fibrous preform formed of refractory fibers for producing a composite material article
GB2271076B (en) * 1992-09-30 1997-04-09 Aircraft Braking Systems Corp Apparatus for manufacturing carbon brake discs
GB9310592D0 (en) * 1993-05-22 1993-07-14 Dunlop Ltd Ultra-high performance carbon composites
GB2282827A (en) * 1993-10-07 1995-04-19 Rolls Royce Plc A method of manufacturing a fibre reinforced composite component
US5662855A (en) * 1994-05-17 1997-09-02 The B.F. Goodrich Company Method of making near net shaped fibrous structures
US5858890A (en) * 1994-07-25 1999-01-12 The B. F. Goodrich Company Laminar fibrous structure having Z-fibers that penetrate a constant number of layers
US6029327A (en) * 1994-07-25 2000-02-29 The B.F. Goodrich Company Process for forming fibrous structures with predetermined Z-fiber distributions
US6405417B1 (en) 1994-07-25 2002-06-18 Goodrich Corporation Process for forming fibrous structures with predetermined Z-fiber distributions
US5515585A (en) * 1994-07-25 1996-05-14 The Bf Goodrich Company Process for forming needled fibrous structures using determined transport depth
US5546880A (en) * 1994-12-29 1996-08-20 The Bf Goodrich Company Annular filamentary structures and methods of making
US5908792A (en) * 1995-10-04 1999-06-01 The B. F. Goodrich Company Brake disk having a functional gradient Z-fiber distribution
FR2754031B1 (fr) * 1996-09-30 1998-12-18 Carbone Ind Elaboration de preformes fibreuses pour la fabrication de disques de frein en materiau composite
US6105223A (en) * 1997-04-30 2000-08-22 The B. F. Goodrich Company Simplified process for making thick fibrous structures
DE69914959T2 (de) 1999-11-25 2004-12-16 Dunlop Aerospace Ltd. Abriebsbeständige gegenstände
GB0112893D0 (en) 2001-05-25 2001-07-18 Dunlop Aerospace Ltd Refractory-carbon composite brake friction elements
GB2403989B (en) 2003-07-15 2006-06-14 Dunlop Aerospace Ltd Composite article
KR102040742B1 (ko) 2009-07-17 2019-11-05 씨에프피 콤포지츠 리미티드 섬유 매트릭스 및 섬유 매트릭스의 제조 방법
DE102009055912A1 (de) 2009-11-27 2011-06-09 Thüringisches Institut für Textil- und Kunststoff-Forschung e.V. Verfahren zur kontinuierlichen Herstellung von Stapelfasergelegen aus endlich langen Verstärkungsfasern mit gerichteter Faserorientierung
KR101931826B1 (ko) * 2010-12-24 2018-12-21 도레이 카부시키가이샤 탄소 섬유 집합체의 제조 방법 및 탄소 섬유 강화 플라스틱의 제조 방법
DE102014013867A1 (de) * 2014-09-24 2016-03-24 Carl Freudenberg Kg Verwendung eines Carbonfaservliesstoffs als Isoliermaterial
CN109968699B (zh) * 2019-04-11 2024-05-28 大庆市九天新型保温建筑材料有限公司 斜面缝扎机及其制作的缝扎网织增强纤维保温板
CN112250463B (zh) * 2020-09-15 2022-05-24 航天特种材料及工艺技术研究所 一种喷射成型法制备隔热瓦坯体的方法
FR3115047B1 (fr) * 2020-10-13 2023-07-28 Safran Landing Systems Structure fibreuse aiguilletée pour la réalisation de préforme fibreuse annulaire de disque de frein
CN114248437B (zh) * 2021-11-30 2024-08-02 吉林大学 一种连续纤维编织体增强纤维复合材料3d打印方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5314878A (en) * 1976-07-21 1978-02-09 Ichikawa Woolen Textile Manufacture of unwoven fabric with optional width

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1282421A (en) * 1968-08-09 1972-07-19 Robinson & Sons Ltd Non-woven fabric
DE2027132A1 (ja) * 1970-06-03 1971-12-09
DE2103052C3 (de) * 1971-01-22 1975-08-21 Zentralnoje Projektno-Konstruktorskoje I Technologitscheskoje Buero Ministerstwa Ljochkoj Promyschlennosti Latwijskoj Ssr, Riga (Sowjetunion) Verfahren zur Herstellung von Faservliesstoffen aus Abfällen der Leder-, Rauchwaren-, Textil- und Zellulosenbetriebe
GB1447029A (en) * 1972-07-21 1976-08-25 Hyfil Ltd Carbon fibre composite
NL7317604A (nl) * 1973-12-21 1975-06-24 Vysoka Skola Strojni Textilni Werkwijze voor het verbeteren van de vormstabili- teit en de mechanische eigenschappen van naald- vliesstoffen.
NL7403948A (nl) * 1974-03-22 1975-09-24 Bekaert Sa Nv Werkwijze ter vervaardiging van een vezelvlies en een aldus verkregen vezelvlies.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5314878A (en) * 1976-07-21 1978-02-09 Ichikawa Woolen Textile Manufacture of unwoven fabric with optional width

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5727746A (en) * 1980-07-25 1982-02-15 Toho Beslon Co Three dimensional fiber reinforcing composite material and its manufacture
JPS6225094B2 (ja) * 1980-07-25 1987-06-01 Toho Rayon Kk
JPS6360154A (ja) * 1986-08-28 1988-03-16 株式会社神戸製鋼所 不織布を用いた炭素／炭素複合材のプリフオ−ム体
JPS6360155A (ja) * 1986-08-28 1988-03-16 株式会社神戸製鋼所 不織布を原料とした炭素／炭素複合材の製造方法
JPH08209513A (ja) * 1994-08-05 1996-08-13 Amoco Corp 繊維強化された炭素及び黒鉛物品
JP2015190066A (ja) * 2014-03-27 2015-11-02 東邦テナックス株式会社 炭素繊維フェルト、その製造方法、及び液流通型電解槽

Also Published As

Publication number Publication date
DE2900938A1 (de) 1979-07-19
GB2012671A (en) 1979-08-01
AU517708B2 (en) 1981-08-20
FR2414574B1 (ja) 1981-03-06
GB2012671B (en) 1982-06-16
FR2414574A1 (fr) 1979-08-10
AU4312579A (en) 1979-07-19

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