FR2330806A1 - Outil de coupe rotatif pour une decapeuse - Google Patents

Outil de coupe rotatif pour une decapeuse

Info

Publication number
FR2330806A1
FR2330806A1 FR7633244A FR7633244A FR2330806A1 FR 2330806 A1 FR2330806 A1 FR 2330806A1 FR 7633244 A FR7633244 A FR 7633244A FR 7633244 A FR7633244 A FR 7633244A FR 2330806 A1 FR2330806 A1 FR 2330806A1
Authority
FR
France
Prior art keywords
scraper
cutting tool
rotary cutting
rotary
tool
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.)
Withdrawn
Application number
FR7633244A
Other languages
English (en)
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.)
Dresser Industries Inc
Original Assignee
Dresser Industries Inc
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 Dresser Industries Inc filed Critical Dresser Industries Inc
Publication of FR2330806A1 publication Critical patent/FR2330806A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/08—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades
    • E01C23/085—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades using power-driven tools, e.g. vibratory tools
    • E01C23/088—Rotary tools, e.g. milling drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
    • B28D1/186—Tools therefor, e.g. having exchangeable cutter bits
    • B28D1/188—Tools therefor, e.g. having exchangeable cutter bits with exchangeable cutter bits or cutter segments
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2866—Small metalwork for digging elements, e.g. teeth scraper bits for rotating digging elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Road Repair (AREA)
FR7633244A 1975-11-06 1976-11-04 Outil de coupe rotatif pour une decapeuse Withdrawn FR2330806A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/629,341 US4006936A (en) 1975-11-06 1975-11-06 Rotary cutter for a road planer

Publications (1)

Publication Number Publication Date
FR2330806A1 true FR2330806A1 (fr) 1977-06-03

Family

ID=24522583

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7633244A Withdrawn FR2330806A1 (fr) 1975-11-06 1976-11-04 Outil de coupe rotatif pour une decapeuse

Country Status (9)

Country Link
US (1) US4006936A (fr)
AU (1) AU505463B2 (fr)
BE (1) BE847805A (fr)
BR (1) BR7607364A (fr)
CA (1) CA1057101A (fr)
ES (1) ES453076A1 (fr)
FR (1) FR2330806A1 (fr)
GB (1) GB1553987A (fr)
ZA (1) ZA766138B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019007885A1 (fr) 2017-07-03 2019-01-10 Societe Parisienne De Produits Et Materiaux Dispositif et procédé d'enlèvement de matière et outil équipé d'un tel dispositif

Families Citing this family (111)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4154481A (en) * 1977-08-12 1979-05-15 Dresser Industries, Inc. Road planer with improved cutting drum suspension
US4302055A (en) * 1978-02-27 1981-11-24 Sandvik Aktiebolag Wedgingly mounted tool holder or adapter for a cutting head
US4193638A (en) * 1978-05-12 1980-03-18 Dresser Industries, Inc. Multiple tip cutting bit for rotary drum-type cutter
US4316636A (en) * 1979-02-01 1982-02-23 Kennametal Inc. Excavation and road maintenance bits and blocks
AU575555B2 (en) * 1983-03-04 1988-08-04 Carboloy, Inc. Milling cutter insert locking means
US4786111A (en) * 1983-09-26 1988-11-22 Zekeriya Yargici Apparatus and method for delivering liquid coolant to drum mounted cutting tools
GB8331266D0 (en) * 1983-11-23 1983-12-29 Bowmer & Kirkland Products Sal Road milling/cutting machine
FR2563447B1 (fr) * 1984-04-25 1988-03-04 Belin Jean Pierre Broyeur de pierres
US4720207A (en) * 1986-08-29 1988-01-19 Koehring Company Segmented rotor
US4883129A (en) * 1988-12-16 1989-11-28 Caterpillar Inc. Bit assembly utilizing carbide insert
EP0662176A1 (fr) * 1992-09-15 1995-07-12 Rota-Pic Limited Ameliorations apportees a un appareil de travaux publics
US5318351A (en) * 1992-12-01 1994-06-07 Walker Ralph L Cutting tool bit assembly
US5536073A (en) * 1995-05-08 1996-07-16 Kennametal Inc. Road milling drum assembly and method of milling
US5884979A (en) * 1997-04-17 1999-03-23 Keystone Engineering & Manufacturing Corporation Cutting bit holder and support surface
ITBO20010189A1 (it) * 2001-03-30 2002-09-30 Simex Engineering S R L Perfezionamenti ai sistemi e riposizionamento per il fissaggio dei portautensili ai tamburi delle fresatrici
DE10128518A1 (de) * 2001-06-13 2002-12-19 Ahwi Maschb Gmbh Rotorsystem für Bodenfräse - Minenfräse
US7066555B2 (en) * 2003-08-26 2006-06-27 Asphalt Zipper, Inc. Reinforced concrete milling/cutting mandrel
DK1589150T3 (da) 2004-04-23 2013-06-24 Peder Groenne As Fræsevalse og apparat til afretning af rabatter langs veje
US7665552B2 (en) * 2006-10-26 2010-02-23 Hall David R Superhard insert with an interface
US7353893B1 (en) 2006-10-26 2008-04-08 Hall David R Tool with a large volume of a superhard material
US7740414B2 (en) 2005-03-01 2010-06-22 Hall David R Milling apparatus for a paved surface
US8109349B2 (en) 2006-10-26 2012-02-07 Schlumberger Technology Corporation Thick pointed superhard material
WO2007085053A1 (fr) * 2006-01-25 2007-08-02 Taiga Investments Pty Limited Porteur pour porter une dent sur un corps d'une lame de coupe ou un tambour de meule pour couper ou meuler de la pierre ou des formations de terre dure
US7950746B2 (en) 2006-06-16 2011-05-31 Schlumberger Technology Corporation Attack tool for degrading materials
US7568770B2 (en) 2006-06-16 2009-08-04 Hall David R Superhard composite material bonded to a steel body
US7469972B2 (en) * 2006-06-16 2008-12-30 Hall David R Wear resistant tool
US8215420B2 (en) * 2006-08-11 2012-07-10 Schlumberger Technology Corporation Thermally stable pointed diamond with increased impact resistance
US7648210B2 (en) 2006-08-11 2010-01-19 Hall David R Pick with an interlocked bolster
US7390066B2 (en) * 2006-08-11 2008-06-24 Hall David R Method for providing a degradation drum
US7410221B2 (en) * 2006-08-11 2008-08-12 Hall David R Retainer sleeve in a degradation assembly
US9051795B2 (en) 2006-08-11 2015-06-09 Schlumberger Technology Corporation Downhole drill bit
US8123302B2 (en) * 2006-08-11 2012-02-28 Schlumberger Technology Corporation Impact tool
US8590644B2 (en) * 2006-08-11 2013-11-26 Schlumberger Technology Corporation Downhole drill bit
US7413256B2 (en) 2006-08-11 2008-08-19 Hall David R Washer for a degradation assembly
US9145742B2 (en) 2006-08-11 2015-09-29 Schlumberger Technology Corporation Pointed working ends on a drill bit
US8567532B2 (en) 2006-08-11 2013-10-29 Schlumberger Technology Corporation Cutting element attached to downhole fixed bladed bit at a positive rake angle
US7384105B2 (en) 2006-08-11 2008-06-10 Hall David R Attack tool
US7832809B2 (en) * 2006-08-11 2010-11-16 Schlumberger Technology Corporation Degradation assembly shield
US8714285B2 (en) * 2006-08-11 2014-05-06 Schlumberger Technology Corporation Method for drilling with a fixed bladed bit
US7963617B2 (en) 2006-08-11 2011-06-21 Schlumberger Technology Corporation Degradation assembly
US7464993B2 (en) * 2006-08-11 2008-12-16 Hall David R Attack tool
US7722127B2 (en) 2006-08-11 2010-05-25 Schlumberger Technology Corporation Pick shank in axial tension
US7445294B2 (en) 2006-08-11 2008-11-04 Hall David R Attack tool
US8453497B2 (en) * 2006-08-11 2013-06-04 Schlumberger Technology Corporation Test fixture that positions a cutting element at a positive rake angle
US8622155B2 (en) 2006-08-11 2014-01-07 Schlumberger Technology Corporation Pointed diamond working ends on a shear bit
US20090058174A1 (en) * 2006-08-11 2009-03-05 Hall David R Attack Tool
US7475948B2 (en) 2006-08-11 2009-01-13 Hall David R Pick with a bearing
US8292372B2 (en) * 2007-12-21 2012-10-23 Hall David R Retention for holder shank
US7871133B2 (en) * 2006-08-11 2011-01-18 Schlumberger Technology Corporation Locking fixture
US7997661B2 (en) * 2006-08-11 2011-08-16 Schlumberger Technology Corporation Tapered bore in a pick
US8485609B2 (en) 2006-08-11 2013-07-16 Schlumberger Technology Corporation Impact tool
US7992944B2 (en) * 2006-08-11 2011-08-09 Schlumberger Technology Corporation Manually rotatable tool
US8118371B2 (en) 2006-08-11 2012-02-21 Schlumberger Technology Corporation Resilient pick shank
US7600823B2 (en) * 2006-08-11 2009-10-13 Hall David R Pick assembly
US7669674B2 (en) * 2006-08-11 2010-03-02 Hall David R Degradation assembly
US7637574B2 (en) 2006-08-11 2009-12-29 Hall David R Pick assembly
US7946657B2 (en) * 2006-08-11 2011-05-24 Schlumberger Technology Corporation Retention for an insert
US7338135B1 (en) * 2006-08-11 2008-03-04 Hall David R Holder for a degradation assembly
US8007051B2 (en) 2006-08-11 2011-08-30 Schlumberger Technology Corporation Shank assembly
US7413258B2 (en) * 2006-08-11 2008-08-19 Hall David R Hollow pick shank
US8449040B2 (en) 2006-08-11 2013-05-28 David R. Hall Shank for an attack tool
US8500209B2 (en) * 2006-08-11 2013-08-06 Schlumberger Technology Corporation Manually rotatable tool
US8136887B2 (en) * 2006-08-11 2012-03-20 Schlumberger Technology Corporation Non-rotating pick with a pressed in carbide segment
US7669938B2 (en) 2006-08-11 2010-03-02 Hall David R Carbide stem press fit into a steel body of a pick
US7419224B2 (en) 2006-08-11 2008-09-02 Hall David R Sleeve in a degradation assembly
US7320505B1 (en) 2006-08-11 2008-01-22 Hall David R Attack tool
US8414085B2 (en) 2006-08-11 2013-04-09 Schlumberger Technology Corporation Shank assembly with a tensioned element
US8201892B2 (en) * 2006-08-11 2012-06-19 Hall David R Holder assembly
US7661765B2 (en) 2006-08-11 2010-02-16 Hall David R Braze thickness control
US7387345B2 (en) 2006-08-11 2008-06-17 Hall David R Lubricating drum
US8960337B2 (en) 2006-10-26 2015-02-24 Schlumberger Technology Corporation High impact resistant tool with an apex width between a first and second transitions
US9068410B2 (en) 2006-10-26 2015-06-30 Schlumberger Technology Corporation Dense diamond body
US7401863B1 (en) 2007-03-15 2008-07-22 Hall David R Press-fit pick
US9051794B2 (en) * 2007-04-12 2015-06-09 Schlumberger Technology Corporation High impact shearing element
US7594703B2 (en) * 2007-05-14 2009-09-29 Hall David R Pick with a reentrant
US7926883B2 (en) * 2007-05-15 2011-04-19 Schlumberger Technology Corporation Spring loaded pick
US8038223B2 (en) * 2007-09-07 2011-10-18 Schlumberger Technology Corporation Pick with carbide cap
US7832808B2 (en) 2007-10-30 2010-11-16 Hall David R Tool holder sleeve
US20110254350A1 (en) 2007-12-21 2011-10-20 Hall David R Resilent Connection between a Pick Shank and Block
US8540037B2 (en) 2008-04-30 2013-09-24 Schlumberger Technology Corporation Layered polycrystalline diamond
US7628233B1 (en) 2008-07-23 2009-12-08 Hall David R Carbide bolster
DE102008045470A1 (de) 2008-09-03 2010-03-04 Wirtgen Gmbh Verfahren zur Bestimmung des Verschleißzustandes
US8061457B2 (en) 2009-02-17 2011-11-22 Schlumberger Technology Corporation Chamfered pointed enhanced diamond insert
US20100242375A1 (en) * 2009-03-30 2010-09-30 Hall David R Double Sintered Thermally Stable Polycrystalline Diamond Cutting Elements
US8322796B2 (en) * 2009-04-16 2012-12-04 Schlumberger Technology Corporation Seal with contact element for pick shield
US8701799B2 (en) * 2009-04-29 2014-04-22 Schlumberger Technology Corporation Drill bit cutter pocket restitution
US20100326740A1 (en) * 2009-06-26 2010-12-30 Hall David R Bonded Assembly Having Low Residual Stress
DE102010015173B4 (de) * 2010-04-16 2024-07-11 Bomag Gmbh Verfahren zum Betrieb einer Bodenfräsmaschine mit höhenverstellbarer Fräswalze
US8261471B2 (en) 2010-06-30 2012-09-11 Hall David R Continuously adjusting resultant force in an excavating assembly
IT1403178B1 (it) * 2010-12-14 2013-10-04 Gelai E Castegnaro S P A Elemento fresante perfezionato per tamburi fresanti di macchine scarificatrici e tamburo fresante utilizzante i suddetti elementi fresanti
US8728382B2 (en) 2011-03-29 2014-05-20 David R. Hall Forming a polycrystalline ceramic in multiple sintering phases
DE102011016271A1 (de) 2011-04-06 2012-10-11 Wirtgen Gmbh Walzengehäuse für eine Arbeitswalze einer Baumaschine oder Abbaumaschine, Baumaschine oder Abbaumaschine, sowie Verfahren zum Überwachen des Zustandes einer Arbeitswalze einer Baumaschine oder Abbaumaschine
US8668275B2 (en) 2011-07-06 2014-03-11 David R. Hall Pick assembly with a contiguous spinal region
US20130062854A1 (en) * 2011-09-14 2013-03-14 Caterpillar Inc. Torsion suspension system
DE102012216262B3 (de) 2012-09-13 2013-10-17 Wirtgen Gmbh Walzengehäuse für eine Arbeitswalze einer Baumaschine oder Abbaumaschine, Baumaschine oder Abbaumaschine, sowie Verfahren zum Überwachen des Zustandes einer Arbeitswalze einer Baumaschine oder Abbaumaschine
WO2014093625A1 (fr) 2012-12-12 2014-06-19 Vermeer Manufacturing Company Systèmes et procédés pour détecter une usure d'éléments de broyage d'une machine de broyage de matériau
WO2014186212A1 (fr) 2013-05-16 2014-11-20 Us Synthetic Corporation Système d'élimination de revêtement de route faisant intervenir des agrégats de diamant polycristallin
WO2014186293A1 (fr) 2013-05-16 2014-11-20 Us Synthetic Corporation Système de fraisage à crampons pourvus d'organes de découpe par cisaillement
DE102013112972A1 (de) 2013-11-25 2015-05-28 Wirtgen Gmbh Verschleißprognoseverfahren und Wartungsverfahren
US10414069B2 (en) 2014-04-30 2019-09-17 Us Synthetic Corporation Cutting tool assemblies including superhard working surfaces, material-removing machines including cutting tool assemblies, and methods of use
US10408057B1 (en) 2014-07-29 2019-09-10 Apergy Bmcs Acquisition Corporation Material-removal systems, cutting tools therefor, and related methods
DE102014118802B4 (de) 2014-12-17 2019-06-19 Wirtgen Gmbh Arbeitseinrichtung
DE102015111249A1 (de) 2015-07-10 2017-01-12 Wirtgen Gmbh Bodenbearbeitungsmaschine und Verfahren zum verschleißoptimierten Betrieb einer Bodenbearbeitungsmaschine
US10648330B1 (en) 2015-09-25 2020-05-12 Us Synthetic Corporation Cutting tool assemblies including superhard working surfaces, cutting tool mounting assemblies, material-removing machines including the same, and methods of use
USD798920S1 (en) 2015-09-25 2017-10-03 Us Synthetic Corporation Cutting tool assembly
USD798350S1 (en) 2015-09-25 2017-09-26 Us Synthetic Corporation Cutting tool assembly
EP3205773B1 (fr) 2016-02-15 2024-05-15 Wirtgen GmbH Système de commande pour l'opération de fraiseuses routières
DE102016222145A1 (de) 2016-11-11 2018-05-17 Wirtgen Gmbh System und Verfahren zum Nachverfolgen von Fräsgut
DE102016223454A1 (de) 2016-11-25 2018-05-30 Wirtgen Gmbh System und Verfahren zum Nachverfolgen von Fräsgut
US10927513B2 (en) 2016-11-11 2021-02-23 Wirtgen Gmbh System and method for the tracking of milling material
DE102019108759B4 (de) * 2019-04-03 2024-06-20 Wirtgen Gmbh Bodenbearbeitungsmaschine

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1670502A (en) * 1927-08-29 1928-05-22 Terrel L Gray Road-planing machine
GB294860A (en) * 1928-03-01 1928-08-02 Franklin Hewitt Smith Improvements in or relating to road scarifiers and rougheners
FR1021622A (fr) * 1950-01-20 1953-02-20 Dispositif de coupe pour haveuses
US2860863A (en) * 1957-03-15 1958-11-18 Cincinnati Mine Machinery Co Mining cutter bit having a resilient tongue
US2916275A (en) * 1957-04-01 1959-12-08 Cincinnati Mine Machinery Co Socket-engaging cutter bits
US3101932A (en) * 1962-01-16 1963-08-27 Western Gear Corp Grading machine having rotary cutting drums
FR83086E (fr) * 1962-02-22 1964-06-05 Heeley Mining Machinery Compan Perfectionnements aux haveuses
FR2004202A1 (fr) * 1968-03-19 1969-11-21 Mitsui Toatsu Chemicals
US3507345A (en) * 1967-11-03 1970-04-21 Woodland Mfg Co Cutter bit
US3560050A (en) * 1968-03-20 1971-02-02 Greenside Machine Co Ltd Machines for removing worn road surfaces
US3737199A (en) * 1971-06-28 1973-06-05 Kennametal Inc Earthworking tool
DE2162256A1 (de) * 1971-12-15 1973-06-28 Eickhoff Geb Schraemmeisselbefestigung, insbesondere fuer loesewerkzeuge von vortriebs- oder gewinnungsmaschinen
FR2162217A1 (fr) * 1971-11-30 1973-07-13 Wirtgen Reihnard
DE2316406A1 (de) * 1973-04-02 1974-10-10 Reinhard Wirtgen Fraeser fuer eine strassendeckenfraesmaschine
US3895843A (en) * 1973-10-23 1975-07-22 British Jeffrey Diamond Limite Road planing machine

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1670502A (en) * 1927-08-29 1928-05-22 Terrel L Gray Road-planing machine
GB294860A (en) * 1928-03-01 1928-08-02 Franklin Hewitt Smith Improvements in or relating to road scarifiers and rougheners
FR1021622A (fr) * 1950-01-20 1953-02-20 Dispositif de coupe pour haveuses
US2860863A (en) * 1957-03-15 1958-11-18 Cincinnati Mine Machinery Co Mining cutter bit having a resilient tongue
US2916275A (en) * 1957-04-01 1959-12-08 Cincinnati Mine Machinery Co Socket-engaging cutter bits
US3101932A (en) * 1962-01-16 1963-08-27 Western Gear Corp Grading machine having rotary cutting drums
FR83086E (fr) * 1962-02-22 1964-06-05 Heeley Mining Machinery Compan Perfectionnements aux haveuses
US3507345A (en) * 1967-11-03 1970-04-21 Woodland Mfg Co Cutter bit
FR2004202A1 (fr) * 1968-03-19 1969-11-21 Mitsui Toatsu Chemicals
US3560050A (en) * 1968-03-20 1971-02-02 Greenside Machine Co Ltd Machines for removing worn road surfaces
US3737199A (en) * 1971-06-28 1973-06-05 Kennametal Inc Earthworking tool
FR2162217A1 (fr) * 1971-11-30 1973-07-13 Wirtgen Reihnard
DE2162256A1 (de) * 1971-12-15 1973-06-28 Eickhoff Geb Schraemmeisselbefestigung, insbesondere fuer loesewerkzeuge von vortriebs- oder gewinnungsmaschinen
DE2316406A1 (de) * 1973-04-02 1974-10-10 Reinhard Wirtgen Fraeser fuer eine strassendeckenfraesmaschine
US3895843A (en) * 1973-10-23 1975-07-22 British Jeffrey Diamond Limite Road planing machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019007885A1 (fr) 2017-07-03 2019-01-10 Societe Parisienne De Produits Et Materiaux Dispositif et procédé d'enlèvement de matière et outil équipé d'un tel dispositif

Also Published As

Publication number Publication date
AU505463B2 (en) 1979-11-22
ZA766138B (en) 1977-09-28
AU1873576A (en) 1978-04-20
ES453076A1 (es) 1977-12-16
GB1553987A (en) 1979-10-17
BE847805A (fr) 1977-02-14
CA1057101A (fr) 1979-06-26
US4006936A (en) 1977-02-08
BR7607364A (pt) 1977-09-20

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