BE646429A - - Google Patents

Info

Publication number
BE646429A
BE646429A BE646429A BE646429A BE646429A BE 646429 A BE646429 A BE 646429A BE 646429 A BE646429 A BE 646429A BE 646429 A BE646429 A BE 646429A BE 646429 A BE646429 A BE 646429A
Authority
BE
Belgium
Application number
BE646429A
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
Priority claimed from AU27676/63A external-priority patent/AU273494B2/en
Application filed filed Critical
Publication of BE646429A publication Critical patent/BE646429A/xx
Priority claimed from US570270A external-priority patent/US3326671A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B19/00—Obtaining zinc or zinc oxide
    • C22B19/04—Obtaining zinc by distilling
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/04—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in tank furnaces
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/12—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in shaft furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/10—Making spongy iron or liquid steel, by direct processes in hearth-type furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C1/00—Refining of pig-iron; Cast iron
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/56—Manufacture of steel by other methods
    • C21C5/567—Manufacture of steel by other methods operating in a continuous way
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B13/00—Obtaining lead
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B15/00—Obtaining copper
    • C22B15/0026—Pyrometallurgy
    • C22B15/0028—Smelting or converting
    • C22B15/003—Bath smelting or converting
    • C22B15/0045—Bath smelting or converting in muffles, crucibles, or closed vessels
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B15/00—Obtaining copper
    • C22B15/0026—Pyrometallurgy
    • C22B15/0054—Slag, slime, speiss, or dross treating
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B15/00—Obtaining copper
    • C22B15/0026—Pyrometallurgy
    • C22B15/006—Pyrometallurgy working up of molten copper, e.g. refining
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B23/00—Obtaining nickel or cobalt
    • C22B23/02—Obtaining nickel or cobalt by dry processes
    • C22B23/025—Obtaining nickel or cobalt by dry processes with formation of a matte or by matte refining or converting into nickel or cobalt, e.g. by the Oxford process
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B25/00—Obtaining tin
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B5/00—General methods of reducing to metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S75/00—Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures
    • Y10S75/957—Continuous refining of molten iron

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Glass Melting And Manufacturing (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Glass Compositions (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
BE646429A 1963-02-21 1964-04-10 BE646429A (de)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
AU27676/63A AU273494B2 (en) 1963-02-21 Continuous production of furnace products
AU29505/63A AU281236B2 (en) 1963-04-11 Direct smelting of metallic ores and concentrates
AU3039263 1963-05-07
AU3473863 1963-08-28
AU3803463 1963-11-25
AU4124464 1964-02-24
US570270A US3326671A (en) 1963-02-21 1966-08-04 Direct smelting of metallic ores
US61910867A 1967-01-05 1967-01-05

Publications (1)

Publication Number Publication Date
BE646429A true BE646429A (de) 1964-10-12

Family

ID=27570041

Family Applications (3)

Application Number Title Priority Date Filing Date
BE644174D BE644174A (de) 1963-02-21 1964-02-21
BE646429A BE646429A (de) 1963-02-21 1964-04-10
BE652436D BE652436A (de) 1963-02-21 1964-08-28

Family Applications Before (1)

Application Number Title Priority Date Filing Date
BE644174D BE644174A (de) 1963-02-21 1964-02-21

Family Applications After (1)

Application Number Title Priority Date Filing Date
BE652436D BE652436A (de) 1963-02-21 1964-08-28

Country Status (12)

Country Link
US (3) US3288451A (de)
AT (1) AT266461B (de)
BE (3) BE644174A (de)
DE (2) DE1519752A1 (de)
FI (1) FI43791C (de)
FR (3) FR1387509A (de)
GB (3) GB1003026A (de)
LU (1) LU45859A1 (de)
MY (1) MY7000089A (de)
NL (1) NL6403867A (de)
SE (2) SE304581B (de)
YU (1) YU31189B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3473918A (en) * 1966-06-17 1969-10-21 Anaconda Co Production of copper
DE1533061B1 (de) * 1965-11-22 1970-04-30 Conzinc Riotinto Ltd Verfahren und Vorrichtung zum kontinuierlichen Schmelzen von Kupfererzen und zur Gewinnung von Rohkupfer

Families Citing this family (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH473222A (de) * 1965-08-19 1969-05-31 Sonen S A Verfahren zur Herstellung von Eisen oder Stahl
US3432289A (en) * 1966-03-23 1969-03-11 Milton I Schwab Method of refining copper
FR1502663A (fr) * 1966-05-17 1967-11-24 Saint Gobain Procédé de fabrication du verre
US3617042A (en) * 1967-08-14 1971-11-02 Nat Res Inst Metals Apparatus for continuous refining of molten metals
US3514280A (en) * 1967-10-19 1970-05-26 Sherwood William L Continuous steelmaking method
AU422152B2 (en) * 1968-02-16 1972-03-07 Monzino Riotinto Of Australia Limited Method and apparatus for refining metals
AU421598B2 (en) * 1968-03-29 1972-02-21 Monzino Riotinto Of Australia Limited Separation of molten materials
DE1758537B1 (de) * 1968-06-22 1973-03-22 Salzgitter Peine Stahlwerke Verfahren und vorrichtung zum kontinuierlichen frischen von roheisen zu stahl
US3554519A (en) * 1968-09-09 1971-01-12 United States Steel Corp Furnace for producing steel continuously
DE1800131B1 (de) * 1968-10-01 1971-05-27 Conzinc Riotinto Ltd Mehrzonenschmelzverfahren und Mehrzonenschmelzofen fuer die kontinuierliche Herstellung von Stahl
JPS523886B1 (de) * 1968-12-07 1977-01-31
US3865579A (en) * 1970-01-05 1975-02-11 Koppers Co Inc Method and apparatus for the production of steel
CA934968A (en) * 1970-03-20 1973-10-09 C. Liang Shou Lead smelting process
CA938111A (en) * 1970-03-26 1973-12-11 E. Mahin William Production of metals from metalliferous materials
FR2083585B1 (de) * 1970-03-26 1973-11-23 Kaiser Aluminium Chem Corp
US3980283A (en) * 1971-02-16 1976-09-14 Gesellschaft Zur Forderung Der Eisenhuttentechnik Mbh Apparatus for performing a continuous metallurgical refining process
US3791816A (en) * 1972-03-30 1974-02-12 Kaiser Aluminium Chem Corp Production of nickel from nickel-bearing materials
US3990890A (en) * 1972-05-17 1976-11-09 Creusot-Loire Process for refining molten copper matte with an enriched oxygen blow
US3988149A (en) * 1973-05-03 1976-10-26 Q-S Oxygen Processes, Inc. Metallurgical process using oxygen
US3988148A (en) * 1973-05-03 1976-10-26 Q-S Oxygen Processes, Inc. Metallurgical process using oxygen
US3941587A (en) * 1973-05-03 1976-03-02 Q-S Oxygen Processes, Inc. Metallurgical process using oxygen
US3990889A (en) * 1973-05-03 1976-11-09 Q-S Oxygen Processes, Inc. Metallurgical process using oxygen
US4006003A (en) * 1975-10-29 1977-02-01 Owens-Illinois, Inc. Process for melting glass
NO136256C (no) * 1975-12-04 1977-08-10 Elkem Spigerverket As Fremgangsm}te ved smelting av sulfidiske mineralkonsentrater.
US4180251A (en) * 1977-03-25 1979-12-25 Dravo Corporation Apparatus for recovering lead from battery mud
US4178174A (en) * 1977-08-24 1979-12-11 The Anaconda Company Direct production of copper metal
US4294433A (en) * 1978-11-21 1981-10-13 Vanjukov Andrei V Pyrometallurgical method and furnace for processing heavy nonferrous metal raw materials
US4252560A (en) * 1978-11-21 1981-02-24 Vanjukov Andrei V Pyrometallurgical method for processing heavy nonferrous metal raw materials
JPS55501146A (de) * 1978-12-19 1980-12-18
US4249722A (en) * 1979-05-11 1981-02-10 Dravo Corporation Apparatus for the flash oxidation of metal concentrates
US4389243A (en) * 1979-05-11 1983-06-21 Dravo Corporation Method for the flash oxidation of metal concentrates
FI65807C (fi) * 1980-04-16 1984-07-10 Outokumpu Oy Foerfarande och anordning foer aotervinning av bly ur ett sulfidkoncentrat
ZA82432B (en) * 1981-01-23 1982-12-29 Bethlehem Steel Corp Mineral wool and process for producing same
DE3304504A1 (de) * 1983-02-10 1984-08-16 Metallgesellschaft Ag, 6000 Frankfurt Verfahren zum kontinuierlichen einschmelzen von eisenschwamm
US4472195A (en) * 1983-08-15 1984-09-18 Olin Corporation Process for decarburizing alloy melts
DE3429972A1 (de) * 1984-08-16 1986-02-27 Norddeutsche Affinerie AG, 2000 Hamburg Verfahren und vorrichtung zur kontinuierlichen pyrometallurgischen verarbeitung von kupferbleistein
AR240891A1 (es) * 1985-06-25 1991-03-27 Ppg Ind Inc Cesionaria De Henr Un metodo de fundir un lote o carga de vidrio o lo similar.
US4701217A (en) * 1986-11-06 1987-10-20 University Of Birmingham Smelting reduction
US5223234A (en) * 1988-12-22 1993-06-29 Kloeckner-Humboldt-Deutz Ag Method for producing molybdenum trioxide (MOO3) from raw materials that contain MOS2
US5060913A (en) * 1989-08-30 1991-10-29 Regents Of The University Of Minnesota Integrated metallurgical reactor
US5069715A (en) * 1990-04-02 1991-12-03 Regents Of The University Of Minnesota Direct smelting process and apparatus
US5374298A (en) * 1990-11-20 1994-12-20 Mitsubishi Materials Corporation Copper smelting process
US5378260A (en) * 1991-07-26 1995-01-03 The United States Of America As Represented By The Department Of Energy Two-zone countercurrent smelter system and process
US5258054A (en) * 1991-11-06 1993-11-02 Ebenfelt Li W Method for continuously producing steel or semi-steel
US5284812A (en) * 1992-01-06 1994-02-08 Minnesota Mining And Manufacturing Company Thiazolo[5,4-d]thiazole color-formers
US5558696A (en) * 1993-12-15 1996-09-24 Bechtel Group, Inc. Method of direct steel making from liquid iron
US5429658A (en) * 1992-10-06 1995-07-04 Bechtel Group, Inc. Method of making iron from oily steel and iron ferrous waste
US5733358A (en) * 1994-12-20 1998-03-31 Usx Corporation And Praxair Technology, Inc. Process and apparatus for the manufacture of steel from iron carbide
AUPP570098A0 (en) 1998-09-04 1998-10-01 Technological Resources Pty Limited A direct smelting process
AUPQ152299A0 (en) * 1999-07-09 1999-08-05 Technological Resources Pty Limited Start-up procedure for direct smelting process
DE102004049234B4 (de) * 2004-10-09 2011-06-09 Xstrata Technology Pty Ltd. Verfahren zur Gewinnung von reinem Kupfer
GB0608080D0 (en) * 2006-04-25 2006-05-31 Warner Noel A Co-production of steel, titanium and high-grade oxide
CN100535133C (zh) * 2006-12-30 2009-09-02 李继宗 石灰系炼钢添加剂及其制造方法
US20100107820A1 (en) * 2008-11-04 2010-05-06 Euston Charles R Method for drying copper sulfide concentrates
WO2019006041A1 (en) * 2017-06-28 2019-01-03 Corning Incorporated FUSION DEVICES FOR GLASS FORMING APPARATUS

Family Cites Families (31)

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US2526473A (en) * 1950-10-17 giu-iland
US596991A (en) * 1898-01-11 g-abretson
US596992A (en) * 1898-01-11 Xmethod o of and apparatus for-bgssemerizinq matte
US1803663A (en) * 1926-04-06 1931-05-05 Carson Invest Company Method and means for producing blister copper from copper bearing materials
US1815946A (en) * 1928-04-19 1931-07-28 Langer Arthur Extracting of iron
US1822588A (en) * 1929-01-14 1931-09-08 United Verde Copper Company Recovering copper from slags
US1911379A (en) * 1930-01-03 1933-05-30 Marx Peter Cupola furnace
US1940977A (en) * 1932-03-08 1933-12-26 Internat Chromium Process Corp Metallurgical process and apparatus
US2161180A (en) * 1936-04-27 1939-06-06 Marx Peter Apparatus for melting metals
US2161181A (en) * 1936-11-12 1939-06-06 Marx Peter Melting furnace
US2451582A (en) * 1941-09-09 1948-10-19 American Rock Wool Corp Apparatus for producing mineral wool
US2426607A (en) * 1945-04-21 1947-09-02 Falconbridge Nickel Mines Ltd Production of metals
US2550502A (en) * 1948-01-30 1951-04-24 Gen Electric Apparatus for purifying metals
US2557650A (en) * 1948-07-30 1951-06-19 Standard Oil Dev Co Metallurgical process
US2603476A (en) * 1949-09-17 1952-07-15 Howard C Whiston Circular open hearth melting furnace
US2862810A (en) * 1950-02-02 1958-12-02 Alexandrovsky Georges Process and apparatus for reducing the silicon content and increasing the temperature of molten pig iron
US2718389A (en) * 1950-11-17 1955-09-20 Electro Chimie Metal Skimmer for holding slag back during pouring metal
US2750277A (en) * 1951-05-14 1956-06-12 Armco Steel Corp Process and apparatus for reducing and smelting iron
US2689433A (en) * 1952-05-12 1954-09-21 Phoenix Glass Company Glass melting tank
US2639984A (en) * 1952-08-07 1953-05-26 Jordan James Fernando Continuous cupola-bessemer process
US2872175A (en) * 1955-02-14 1959-02-03 Cie De Pont A Mousson Annealing furnace
US3102806A (en) * 1958-06-10 1963-09-03 Kennecott Copper Corp Reverberatory smelting method and apparatus
US3022157A (en) * 1959-05-21 1962-02-20 Pyromet Corp Method for continuous hearth refining of steel and beneficiation of ores of ferro alloys
FR1238667A (fr) * 1959-10-15 1960-08-12 Procédé pour l'obtention d'un produit métallique notamment du fer ou de l'acier, four pour la mise en oeuvre de ce procédé, ou procédés similaires
US3214264A (en) * 1959-10-23 1965-10-26 Huettenwerk Oberhausen Ag Treatment of metal oxides
US3091524A (en) * 1959-10-23 1963-05-28 Strategic Materials Corp Metallurgical process
GB930466A (en) * 1960-07-06 1963-07-03 Nat Smelting Co Ltd Improvements in or relating to the treatment of arsenical drosses
US3215424A (en) * 1960-12-07 1965-11-02 Kanamori Kuro Apparatus for refining iron
US3140168A (en) * 1961-05-31 1964-07-07 Inland Steel Co Reduction of iron ore with hydrogen
US3326671A (en) * 1963-02-21 1967-06-20 Howard K Worner Direct smelting of metallic ores
US3287006A (en) * 1963-04-08 1966-11-22 Yawata Iron & Steel Co Continuous steel making furnace

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1533061B1 (de) * 1965-11-22 1970-04-30 Conzinc Riotinto Ltd Verfahren und Vorrichtung zum kontinuierlichen Schmelzen von Kupfererzen und zur Gewinnung von Rohkupfer
US3473918A (en) * 1966-06-17 1969-10-21 Anaconda Co Production of copper

Also Published As

Publication number Publication date
FR1429265A (fr) 1966-02-25
BE644174A (de) 1964-06-15
SE304581B (de) 1968-09-30
GB1003026A (en) 1965-09-02
DE1458306A1 (de) 1969-02-20
FI43791C (fi) 1971-06-10
LU45859A1 (de) 1965-10-11
DE1519752A1 (de) 1970-02-26
FI43791B (de) 1971-03-01
BE652436A (de) 1964-12-16
DE1458306B2 (de) 1971-09-02
US3326672A (en) 1967-06-20
US3288451A (en) 1966-11-29
YU31189B (en) 1973-02-28
MY7000089A (en) 1970-12-31
US3463472A (en) 1969-08-26
FR1405775A (fr) 1965-07-09
NL6403867A (de) 1964-10-12
FR1387509A (fr) 1965-01-29
GB1064826A (en) 1967-04-12
AT266461B (de) 1968-11-25
GB1055935A (en) 1967-01-18
SE315741B (de) 1969-10-06

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