IT1093433B - Perfezionamento alla struttura anulare di rinforzo per pneumatici radiali - Google Patents

Perfezionamento alla struttura anulare di rinforzo per pneumatici radiali

Info

Publication number
IT1093433B
IT1093433B IT20994/78A IT2099478A IT1093433B IT 1093433 B IT1093433 B IT 1093433B IT 20994/78 A IT20994/78 A IT 20994/78A IT 2099478 A IT2099478 A IT 2099478A IT 1093433 B IT1093433 B IT 1093433B
Authority
IT
Italy
Prior art keywords
cords
layer
tire
layers
strip
Prior art date
Application number
IT20994/78A
Other languages
English (en)
Other versions
IT7820994A0 (it
Inventor
Luigi Maiocchi
Original Assignee
Pirelli
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 Pirelli filed Critical Pirelli
Publication of IT7820994A0 publication Critical patent/IT7820994A0/it
Priority to IT20994/78A priority Critical patent/IT1093433B/it
Priority to CA315,291A priority patent/CA1089341A/en
Priority to NL7810897A priority patent/NL7810897A/xx
Priority to DK494378A priority patent/DK150570C/da
Priority to SE7812263A priority patent/SE7812263L/xx
Priority to TR20674A priority patent/TR20674A/xx
Priority to AR275305A priority patent/AR220172A1/es
Priority to GB7905467A priority patent/GB2015937B/en
Priority to ZA79805A priority patent/ZA79805B/xx
Priority to IN121/DEL/79A priority patent/IN150528B/en
Priority to BE193588A priority patent/BE874324A/xx
Priority to LU80957A priority patent/LU80957A1/xx
Priority to FR7904825A priority patent/FR2419187A1/fr
Priority to FI790651A priority patent/FI790651A/fi
Priority to ES478547A priority patent/ES478547A1/es
Priority to DE19792909086 priority patent/DE2909086A1/de
Priority to US06/018,666 priority patent/US4293019A/en
Priority to NO790776A priority patent/NO147630C/no
Priority to JP2759379A priority patent/JPS54126305A/ja
Priority to GR58553A priority patent/GR74916B/el
Priority to AT179279A priority patent/AT362245B/de
Priority to IE716/79A priority patent/IE48017B1/en
Application granted granted Critical
Publication of IT1093433B publication Critical patent/IT1093433B/it

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • B60C9/22—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • B60C9/2003—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel characterised by the materials of the belt cords
    • B60C9/2006—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel characterised by the materials of the belt cords consisting of steel cord plies only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • B60C9/2003—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel characterised by the materials of the belt cords
    • B60C9/2009—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel characterised by the materials of the belt cords comprising plies of different materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • B60C9/22—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
    • B60C2009/2223—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre with an interrupted zero degree ply, e.g. using two or more portions for the same ply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • B60C9/22—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
    • B60C2009/2252—Physical properties or dimension of the zero degree ply cords
    • B60C2009/2266—Density of the cords in width direction
    • B60C2009/2271—Density of the cords in width direction with variable density
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • B60C9/22—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
    • B60C2009/2252—Physical properties or dimension of the zero degree ply cords
    • B60C2009/2295—Physical properties or dimension of the zero degree ply cords with different cords in the same layer
    • 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
    • Y10T152/00—Resilient tires and wheels
    • Y10T152/10—Tires, resilient
    • Y10T152/10495—Pneumatic tire or inner tube
    • Y10T152/10765—Characterized by belt or breaker structure
    • Y10T152/10792—Structure where each bias angle reinforcing cord ply has no opposingly angled ply

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)
IT20994/78A 1978-03-09 1978-03-09 Perfezionamento alla struttura anulare di rinforzo per pneumatici radiali IT1093433B (it)

Priority Applications (22)

Application Number Priority Date Filing Date Title
IT20994/78A IT1093433B (it) 1978-03-09 1978-03-09 Perfezionamento alla struttura anulare di rinforzo per pneumatici radiali
CA315,291A CA1089341A (en) 1978-03-09 1978-10-31 Annular reinforcing structure for radial tires
NL7810897A NL7810897A (nl) 1978-03-09 1978-11-01 Radiaalbandgordel.
DK494378A DK150570C (da) 1978-03-09 1978-11-06 Pneumatisk daek til motorkoeretoejer, fortrinsvis til normal og kraftig belastning
SE7812263A SE7812263L (sv) 1978-03-09 1978-11-28 Anordning vid fordonsdeck
TR20674A TR20674A (tr) 1978-03-09 1978-12-22 Radyal dis lastiklere mahsus dairevi takviye yapisindaki islahat
AR275305A AR220172A1 (es) 1978-03-09 1979-01-26 Mejoras en neumaticos para vehiculos automotores
GB7905467A GB2015937B (en) 1978-03-09 1979-02-15 Radial tyre breaker assemblies
ZA79805A ZA79805B (en) 1978-03-09 1979-02-20 Tyres
IN121/DEL/79A IN150528B (it) 1978-03-09 1979-02-20
BE193588A BE874324A (fr) 1978-03-09 1979-02-21 Perfectionnement a la structure annulaire de renforcement de pneumatiques radiaux
LU80957A LU80957A1 (fr) 1978-03-09 1979-02-22 Perfectionnement a la structure annulaire de renforcement de pneumatiques radiaux
FR7904825A FR2419187A1 (fr) 1978-03-09 1979-02-26 Structure annulaire de renforcement pour pneumatiques radiaux
FI790651A FI790651A (fi) 1978-03-09 1979-02-27 Pneumatisk daeck foer motorfordon
ES478547A ES478547A1 (es) 1978-03-09 1979-02-28 Perfeccionamientos en la estructura anular de refuerzo para neumaticos radiales.
NO790776A NO147630C (no) 1978-03-09 1979-03-08 Pneumatisk dekk for motorkjoeretoeyer.
US06/018,666 US4293019A (en) 1978-03-09 1979-03-08 Breaker for radial tire
DE19792909086 DE2909086A1 (de) 1978-03-09 1979-03-08 Luftreifen fuer kraftfahrzeuge
JP2759379A JPS54126305A (en) 1978-03-09 1979-03-09 Pneumatic tire
GR58553A GR74916B (it) 1978-03-09 1979-03-09
AT179279A AT362245B (de) 1978-03-09 1979-03-09 Luftreifen fuer kraftfahrzeuge
IE716/79A IE48017B1 (en) 1978-03-09 1979-08-08 Improvements in or relating to radial tyres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT20994/78A IT1093433B (it) 1978-03-09 1978-03-09 Perfezionamento alla struttura anulare di rinforzo per pneumatici radiali

Publications (2)

Publication Number Publication Date
IT7820994A0 IT7820994A0 (it) 1978-03-09
IT1093433B true IT1093433B (it) 1985-07-19

Family

ID=11175116

Family Applications (1)

Application Number Title Priority Date Filing Date
IT20994/78A IT1093433B (it) 1978-03-09 1978-03-09 Perfezionamento alla struttura anulare di rinforzo per pneumatici radiali

Country Status (22)

Country Link
US (1) US4293019A (it)
JP (1) JPS54126305A (it)
AR (1) AR220172A1 (it)
AT (1) AT362245B (it)
BE (1) BE874324A (it)
CA (1) CA1089341A (it)
DE (1) DE2909086A1 (it)
DK (1) DK150570C (it)
ES (1) ES478547A1 (it)
FI (1) FI790651A (it)
FR (1) FR2419187A1 (it)
GB (1) GB2015937B (it)
GR (1) GR74916B (it)
IE (1) IE48017B1 (it)
IN (1) IN150528B (it)
IT (1) IT1093433B (it)
LU (1) LU80957A1 (it)
NL (1) NL7810897A (it)
NO (1) NO147630C (it)
SE (1) SE7812263L (it)
TR (1) TR20674A (it)
ZA (1) ZA79805B (it)

Families Citing this family (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1125578B (it) * 1979-10-24 1986-05-14 Pirelli Perfezionamento alle strutture anulari di rinforzo per pneumatici radiali
JPS58142835A (ja) * 1982-02-17 1983-08-25 Toyo Tire & Rubber Co Ltd ラジアルタイヤの成形方法
US4459167A (en) * 1982-08-23 1984-07-10 Grumman Aerospace Corporation Run-flat tire and method of making same
JPH0741768B2 (ja) * 1984-04-05 1995-05-10 住友ゴム工業株式会社 空気入りタイヤ
JPS60234002A (ja) * 1984-04-30 1985-11-20 Yokohama Rubber Co Ltd:The 空気入りラジアルタイヤ
JPS6115604U (ja) * 1984-07-02 1986-01-29 住友ゴム工業株式会社 ラジアルタイヤ
JPS6116105A (ja) * 1984-07-03 1986-01-24 Sumitomo Rubber Ind Ltd 自動二輪車用タイヤ
JPS6160303A (ja) * 1984-08-31 1986-03-28 Yokohama Rubber Co Ltd:The 空気入りラジアルタイヤの製造方法
JPS6160305A (ja) * 1984-09-03 1986-03-28 Sumitomo Rubber Ind Ltd 航空機用ラジアルタイヤ
US4673014A (en) * 1985-06-06 1987-06-16 Grumman Aerospace Corporation Run-flat tire incorporating tape-wrapped helical coil band and method of forming
JPS628801A (ja) * 1985-07-06 1987-01-16 Toyo Tire & Rubber Co Ltd 重荷重ラジアルタイヤ
JPH0745209B2 (ja) * 1986-03-03 1995-05-17 株式会社ブリヂストン 空気入りタイヤの製造方法
DE3606934A1 (de) * 1986-03-04 1987-09-10 Continental Gummi Werke Ag Fahrzeugluftreifen
JPH0655562B2 (ja) * 1986-04-22 1994-07-27 株式会社ブリヂストン 空気入りタイヤ
JPS62292506A (ja) * 1986-06-13 1987-12-19 Yokohama Rubber Co Ltd:The ラジアルタイヤ
IT1204980B (it) * 1987-04-28 1989-03-10 Pirelli Miglioramenti alle armature di rinforzo dei pneumatici per ruote di veicoli
US5076336A (en) * 1987-08-27 1991-12-31 Bridgestone Corporation Pneumatic tire with a reinforcing layer formed by spirally hooping two continuous materials
EP0305558B1 (en) * 1987-08-31 1992-07-08 Bridgestone Corporation Pneumatic tire
JP2594621B2 (ja) * 1988-07-25 1997-03-26 株式会社ブリヂストン ２輪車用空気入りラジアルタイヤ
JPH0238102A (ja) * 1988-07-29 1990-02-07 Yokohama Rubber Co Ltd:The 空気入りラジアルタイヤ及びその製造方法
GB8822521D0 (en) * 1988-09-26 1988-11-02 Tech Textiles Ltd Method of producing formable composite material
JPH02147406A (ja) * 1988-11-30 1990-06-06 Sumitomo Rubber Ind Ltd 重荷重高速ラジアルタイヤ
JPH0325003A (ja) * 1989-06-23 1991-02-01 Toyo Tire & Rubber Co Ltd 超偏平ラジアルタイヤ
JP2788655B2 (ja) * 1989-10-13 1998-08-20 住友ゴム工業 株式会社 自動二輪車用タイヤ
ES2060063T3 (es) * 1989-10-27 1994-11-16 Bridgestone Corp Neumatico radial.
JP2842558B2 (ja) * 1990-05-02 1999-01-06 住友ゴム工業 株式会社 自動二輪車用ラジアルタイヤ
JPH0431107A (ja) * 1990-05-28 1992-02-03 Toyo Tire & Rubber Co Ltd ラジアルタイヤ
IT1248851B (it) * 1990-06-14 1995-01-30 Pirelli Procedimento per la fabbricazione di pneumatici per veicoli a due ruote e pneumatici cosi' prodotti
US5827381A (en) * 1990-08-10 1998-10-27 Bridgestone Corporation Pneumatic radial tires including a tire component containing groups of reinforcing elements
JP2713808B2 (ja) * 1990-08-10 1998-02-16 株式会社ブリヂストン ラジアルタイヤ
US5261475A (en) * 1990-12-18 1993-11-16 Bridgestone Corporation Off-the-road pneumatic steel radial tires
JP2544555B2 (ja) * 1991-10-14 1996-10-16 住友ゴム工業株式会社 自動二輪車用タイヤ
EP0565339B1 (en) * 1992-04-06 1996-01-24 Sumitomo Rubber Industries Limited A motorcycle tyre
CA2080852A1 (en) * 1992-04-13 1993-10-14 Pedro Yap Truck tire with split overlay
DE59303000D1 (de) * 1992-09-15 1996-07-25 Semperit Reifen Festigkeitsträger
DE4240278A1 (de) * 1992-12-01 1994-06-09 Uniroyal Englebert Gmbh Fahrzeugluftreifen mit asymmetrischen Gürteleigenschaften
IT1277400B1 (it) * 1995-08-01 1997-11-10 Pirelli Pneumatico ad elevata curvatura trasversale particolarmente per veicolo a due ruote
IT1283051B1 (it) * 1996-05-22 1998-04-07 Pirelli Coppia di pneumatici ad elevata curvatura trasversale,particolarmente per veicoli a due ruote e metodo per il controllo del comportamento
IT1283351B1 (it) * 1996-07-29 1998-04-17 Pirelli Pneumatico ad elevata curvatura trasversale in particolare per ruote anteriori
FR2765151A1 (fr) * 1997-06-26 1999-01-01 Michelin & Cie Armature de sommet pour pneumatique radial
DE19834991B4 (de) * 1998-08-03 2005-06-30 Continental Aktiengesellschaft Fahrzeugluftreifen
JP2001138710A (ja) 1999-08-27 2001-05-22 Bridgestone Corp 重荷重用空気入りラジアルタイヤ
JP4495893B2 (ja) * 1999-12-07 2010-07-07 ソシエテ ド テクノロジー ミシュラン 耐久性に優れた空気タイヤ
US6425426B1 (en) 1999-12-07 2002-07-30 Michelin Recherche Et Technique S.A. Pneumatic tire with cords directly contacting tread compound
DE10016202B4 (de) * 2000-03-31 2005-06-30 Continental Aktiengesellschaft Gürtel mit Verstärkungselementen für einen Fahrzeugluftreifen sowie Fahrzeugluftreifen
DE10138670B4 (de) 2001-08-07 2005-03-10 Continental Ag Fahrzeugluftreifen mit einer Gürtelbandage
US7404425B2 (en) * 2002-04-24 2008-07-29 The Goodyear Tire & Rubber Company Belt package for super single truck tires
JP4220542B2 (ja) * 2006-10-25 2009-02-04 横浜ゴム株式会社 空気入りタイヤ
FR2916160B1 (fr) * 2007-05-14 2009-07-17 Michelin Soc Tech Pneumatique pour vehicules lourds
JP5013522B2 (ja) * 2007-09-07 2012-08-29 株式会社ブリヂストン 空気入りラジアルタイヤ
EP2174802A1 (en) * 2008-10-08 2010-04-14 Société de Technologie MICHELIN Tyre having a belt ply with cords disposed along the circumference of the tire to reduce the tire noise
FR2953761B1 (fr) * 2009-12-10 2012-04-13 Michelin Soc Tech Pneumatique pour vehicules lourds comportant une couche d'elements de renforcement circonferentiels constituee d'une partie centrale et de deux parties axialement exterieures
CN102666133B (zh) * 2009-12-11 2015-06-24 倍耐力轮胎股份公司 用于重载车辆的车轮的轮胎
WO2012164442A1 (en) 2011-05-31 2012-12-06 Pirelli Tyre S.P.A. Pneumatic tyre for heavy load vehicle wheels
JP6366400B2 (ja) * 2014-07-23 2018-08-01 東洋ゴム工業株式会社 空気入りタイヤ
JP7467964B2 (ja) * 2019-03-22 2024-04-16 住友ゴム工業株式会社 自動二輪車用タイヤ

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR792853A (fr) * 1934-07-23 1936-01-11 Matador Gummiwerke Ag Bandage pneumatique pour véhicules et analogues
AT203889B (de) * 1956-05-18 1959-06-10 Phoenix Gummiwerke Ag Kraftfahrzeugluftreifen
BE564696A (it) * 1957-01-10
GB1276854A (en) * 1968-07-16 1972-06-07 Dunlop Holdings Ltd Improvements in or relating to pneumatic tyres
FR2032063A6 (en) * 1969-02-17 1970-11-20 Kleber Colombes Aircraft tyre
NL169158C (nl) * 1969-07-29 1982-06-16 Pirelli Loopvlakring voor een luchtband met een losneembaar loopvlak, alsmede een luchtband met een dergelijke loopvlakring.
FR2133533B1 (it) * 1971-04-16 1974-03-08 Michelin & Cie
IT999224B (it) * 1973-11-06 1976-02-20 Pirelli Perfezionamento alla struttura di intermedio per pneumatici radiali e metodo per ottenere tale struttura
US3897814A (en) * 1974-03-11 1975-08-05 Caterpillar Tractor Co Tire tread belt
IT1054931B (it) * 1976-01-05 1981-11-30 Pirelli Perfezionamento a pneumatici a carcassa radiale
US4169495A (en) * 1976-01-05 1979-10-02 Industrie Pirelli S.P.A. Radial tire for motor vehicles
IT1081053B (it) * 1976-05-17 1985-05-16 Pirelli Perfezionamento alla struttura resistente dei pneumatici per ruote di veicoli
JPS5716601A (en) * 1980-07-04 1982-01-28 Kubota Ltd Working machine with posture controller

Also Published As

Publication number Publication date
GR74916B (it) 1984-07-12
ES478547A1 (es) 1979-05-16
DE2909086A1 (de) 1979-09-20
GB2015937A (en) 1979-09-19
DK150570C (da) 1987-10-12
IE790716L (en) 1979-09-09
FR2419187A1 (fr) 1979-10-05
FI790651A (fi) 1979-09-10
ZA79805B (en) 1980-03-26
DK150570B (da) 1987-03-30
LU80957A1 (fr) 1979-06-18
NO147630C (no) 1983-05-18
US4293019A (en) 1981-10-06
SE7812263L (sv) 1979-09-10
NL7810897A (nl) 1979-09-11
FR2419187B1 (it) 1983-11-10
AR220172A1 (es) 1980-10-15
IE48017B1 (en) 1984-09-05
IN150528B (it) 1982-11-06
BE874324A (fr) 1979-06-18
GB2015937B (en) 1982-06-23
IT7820994A0 (it) 1978-03-09
AT362245B (de) 1981-04-27
NO147630B (no) 1983-02-07
NO790776L (no) 1979-09-11
CA1089341A (en) 1980-11-11
ATA179279A (de) 1980-09-15
DK494378A (da) 1979-09-10
JPS54126305A (en) 1979-10-01
TR20674A (tr) 1982-04-02

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