FR1209669A - Improvements to alloys for metallization - Google Patents

Improvements to alloys for metallization

Info

Publication number
FR1209669A
FR1209669A FR1209669DA FR1209669A FR 1209669 A FR1209669 A FR 1209669A FR 1209669D A FR1209669D A FR 1209669DA FR 1209669 A FR1209669 A FR 1209669A
Authority
FR
France
Prior art keywords
metallization
alloys
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.)
Expired
Application number
Other languages
French (fr)
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.)
Metallizing Engineering Co Inc
Original Assignee
Metallizing Engineering Co 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 Metallizing Engineering Co Inc filed Critical Metallizing Engineering Co Inc
Application granted granted Critical
Publication of FR1209669A publication Critical patent/FR1209669A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3046—Co as the principal constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3033—Ni as the principal constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3033—Ni as the principal constituent
    • B23K35/304—Ni as the principal constituent with Cr as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • C23C4/067—Metallic material containing free particles of non-metal elements, e.g. carbon, silicon, boron, phosphorus or arsenic
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/129—Flame spraying
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/131—Wire arc spraying
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/10—Arrangements of light sources specially adapted for spectrometry or colorimetry

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Nonmetallic Welding Materials (AREA)
FR1209669D 1957-11-25 1958-08-27 Improvements to alloys for metallization Expired FR1209669A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US698378A US2936229A (en) 1957-11-25 1957-11-25 Spray-weld alloys

Publications (1)

Publication Number Publication Date
FR1209669A true FR1209669A (en) 1960-03-03

Family

ID=24804984

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1209669D Expired FR1209669A (en) 1957-11-25 1958-08-27 Improvements to alloys for metallization

Country Status (4)

Country Link
US (1) US2936229A (en)
DE (1) DE1198568B (en)
FR (1) FR1209669A (en)
GB (1) GB843423A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1300412B (en) * 1963-07-24 1969-07-31 Metco Inc Westbury Flame spray powder based on a self-flowing alloy and flame spray process
DE2432125A1 (en) * 1973-07-06 1975-01-23 Metco Inc FLAME SPRAYING MATERIALS
FR2505878A1 (en) * 1981-04-06 1982-11-19 Eutectic Corp POWDER FOR FLAME SPRAY IN A TORCH AND METHOD FOR MANUFACTURING THE SAME

Families Citing this family (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3254970A (en) * 1960-11-22 1966-06-07 Metco Inc Flame spray clad powder composed of a refractory material and nickel or cobalt
US3155491A (en) * 1961-12-26 1964-11-03 Gen Electric Brazing alloy
DE1174997B (en) * 1962-02-14 1964-07-30 Deutsche Edelstahlwerke Ag Use of hard metals containing boron
NL302658A (en) * 1963-04-23
US3303024A (en) * 1963-12-23 1967-02-07 Coast Metals Inc Nickel-base brazing alloys
US3238060A (en) * 1964-02-27 1966-03-01 Eutectic Welding Alloys Method for coating metals
US3246981A (en) * 1964-02-27 1966-04-19 Joseph F Quaas Homogenous ductile nickel base alloy weld deposit and method for producing same
US3436248A (en) * 1965-03-25 1969-04-01 Metco Inc Flame spraying exothermically reacting intermetallic compound forming composites
US3355287A (en) * 1965-05-26 1967-11-28 Coast Metals Inc Cobalt-base alloys
US3482967A (en) * 1965-10-22 1969-12-09 Gen Electric Brazing alloy
US3450527A (en) * 1966-12-09 1969-06-17 Eutectic Welding Alloys Welding alloy
US3437480A (en) * 1967-05-09 1969-04-08 Coast Metals Inc Nickel-base alloys containing copper
US3617358A (en) * 1967-09-29 1971-11-02 Metco Inc Flame spray powder and process
US3536466A (en) * 1968-02-21 1970-10-27 Tokyo Shibaura Electric Co Compression mould assembly for producing glass articles of uneven thickness
FR2213350B1 (en) * 1972-11-08 1975-04-11 Sfec
US4198234A (en) * 1972-11-10 1980-04-15 Brico Engineering Sintered metal articles
US3976481A (en) * 1972-12-12 1976-08-24 Daniil Andreevich Dudko Wear-resistant composite material
US4019875A (en) * 1973-07-06 1977-04-26 Metco, Inc. Aluminum-coated nickel or cobalt core flame spray materials
CA1036841A (en) * 1973-07-06 1978-08-22 Ferdinand J. Dittrich Aluminum-coated nickel or cobalt core flame spray materials
US3914867A (en) * 1974-05-23 1975-10-28 Dentsply Res & Dev Dental alloy
NZ179842A (en) * 1975-02-03 1979-03-28 Johnson & Johnson Dental solder
AR206452A1 (en) * 1975-02-03 1976-07-23 Johnson & Johnson A DENTAL WELD
US4268308A (en) * 1975-02-03 1981-05-19 Johnson & Johnson Dental alloys
US4192672A (en) * 1978-01-18 1980-03-11 Scm Corporation Spray-and-fuse self-fluxing alloy powders
US4401724A (en) * 1978-01-18 1983-08-30 Scm Corporation Spray-and-fuse self-fluxing alloy powder coating
US4161555A (en) * 1978-04-06 1979-07-17 Eastside Machine & Welding, Inc. Flame spraying process for materials requiring fusion
US4173685A (en) * 1978-05-23 1979-11-06 Union Carbide Corporation Coating material and method of applying same for producing wear and corrosion resistant coated articles
US4175953A (en) * 1978-06-29 1979-11-27 Johnson & Johnson Non-precious dental alloy of Co-Ni-Cr containing Si and B
US4240824A (en) * 1979-10-04 1980-12-23 Scm Corporation Process of making nickel or cobalt powder with precipitates
JPS6059077B2 (en) * 1980-05-02 1985-12-23 福田金属箔粉工業株式会社 Nickel-based overlay alloy
US4348434A (en) * 1981-04-06 1982-09-07 Eutectic Corporation Flame spray powder
CH649100A5 (en) * 1981-10-21 1985-04-30 Castolin Sa PROCESS FOR PRODUCTION OF INTERIOR COATINGS OF PIPES.
DE3148198A1 (en) * 1981-12-05 1983-06-09 Brown, Boveri & Cie Ag, 6800 Mannheim "HIGH TEMPERATURE PROTECTIVE LAYER"
US4529616A (en) * 1982-08-25 1985-07-16 Alloy Metals, Inc. Method of forming corrosion resistant coating
US4453976A (en) * 1982-08-25 1984-06-12 Alloy Metals, Inc. Corrosion resistant thermal spray alloy and coating method
DE3446479A1 (en) * 1984-12-20 1986-07-03 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau METAL FASTENER
US4692305A (en) * 1985-11-05 1987-09-08 Perkin-Elmer Corporation Corrosion and wear resistant alloy
EP0223135A1 (en) * 1985-11-05 1987-05-27 The Perkin-Elmer Corporation Corrosion resistant self-fluxing alloys for thermal spraying
US4741974A (en) * 1986-05-20 1988-05-03 The Perkin-Elmer Corporation Composite wire for wear resistant coatings
US4725508A (en) * 1986-10-23 1988-02-16 The Perkin-Elmer Corporation Composite hard chromium compounds for thermal spraying
US4814024A (en) * 1987-03-30 1989-03-21 Owens-Illinois Glass Container Inc. Nickel base alloy glass shaping member
US20060210826A1 (en) * 2005-03-21 2006-09-21 Wu James B C Co-based wire and method for saw tip manufacture and repair
JP4508143B2 (en) * 2006-04-06 2010-07-21 株式会社デンソー Fuel pump
EP2393523A4 (en) 2009-02-06 2014-03-19 Osseous Technologies Of America Biphasic collagen membrane or capsule for guided tissue regeneration
GB0911201D0 (en) * 2009-06-30 2009-08-12 Hunprenco Prec Engineers Ltd A coating compositions
CN103635284B (en) * 2011-03-23 2017-03-29 思高博塔公司 The particulate nickel-base alloy split for stress corrosion resistant and its method for designing
US20130156555A1 (en) * 2011-12-15 2013-06-20 General Electric Company Braze materials, brazing processes, and components with wear-resistant coatings formed thereby
CN104039483B (en) 2011-12-30 2017-03-01 思高博塔公司 Coating composition
FR2989911B1 (en) * 2012-04-25 2015-01-16 Air Liquide ELECTROCONDUCTIVE LAYERED PLATING FLOW CONTAINING AN NI-CR ALLOY
US9738959B2 (en) 2012-10-11 2017-08-22 Scoperta, Inc. Non-magnetic metal alloy compositions and applications
WO2015054637A1 (en) 2013-10-10 2015-04-16 Scoperta, Inc. Methods of selecting material compositions and designing materials having a target property
WO2015081209A1 (en) 2013-11-26 2015-06-04 Scoperta, Inc. Corrosion resistant hardfacing alloy
WO2015191458A1 (en) 2014-06-09 2015-12-17 Scoperta, Inc. Crack resistant hardfacing alloys
US10465269B2 (en) 2014-07-24 2019-11-05 Scoperta, Inc. Impact resistant hardfacing and alloys and methods for making the same
WO2016014851A1 (en) 2014-07-24 2016-01-28 Scoperta, Inc. Hardfacing alloys resistant to hot tearing and cracking
CN107532265B (en) 2014-12-16 2020-04-21 思高博塔公司 Ductile and wear resistant iron alloy containing multiple hard phases
WO2017040775A1 (en) 2015-09-04 2017-03-09 Scoperta, Inc. Chromium free and low-chromium wear resistant alloys
EP3347501B8 (en) 2015-09-08 2021-05-12 Oerlikon Metco (US) Inc. Non-magnetic, strong carbide forming alloys for powder manufacture
JP2018537291A (en) 2015-11-10 2018-12-20 スコペルタ・インコーポレイテッドＳｃｏｐｅｒｔａ， Ｉｎｃ． Antioxidation twin wire arc spray material
CA3017642A1 (en) 2016-03-22 2017-09-28 Scoperta, Inc. Fully readable thermal spray coating
US11939646B2 (en) 2018-10-26 2024-03-26 Oerlikon Metco (Us) Inc. Corrosion and wear resistant nickel based alloys
CA3136967A1 (en) 2019-05-03 2020-11-12 Oerlikon Metco (Us) Inc. Powder feedstock for wear resistant bulk welding configured to optimize manufacturability
US11643708B2 (en) * 2019-05-23 2023-05-09 Toyo Seikan Group Holdings, Ltd. Nickel-based self-fluxing alloy, glass manufacturing member using the nickel-based self-fluxing alloy, as well as mold and glass gob transporting member each using the glass manufacturing member

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1365499A (en) * 1919-10-23 1921-01-11 Gen Electric Surface-alloyed metal
US1514064A (en) * 1922-09-23 1924-11-04 Mandell Ambrose Joseph Alloy intended for castings
US2103267A (en) * 1926-11-20 1937-12-28 Rca Corp Alloy for vacuum tube elements
US2504239A (en) * 1946-04-12 1950-04-18 Int Nickel Co Nickel plating
US2775531A (en) * 1949-05-10 1956-12-25 Univ Ohio State Res Found Method of coating a metal surface
US2661285A (en) * 1950-02-25 1953-12-01 Gorschalki Max Nonferrous alloy
US2714760A (en) * 1951-07-02 1955-08-09 Curtiss Wright Corp Method of brazing and joint produced thereby
US2743177A (en) * 1952-05-02 1956-04-24 Coast Metals Inc Nickel-silicon-boron alloys
US2793108A (en) * 1953-07-30 1957-05-21 Int Nickel Co Method of producing metal powder
US2864696A (en) * 1956-01-31 1958-12-16 Duriron Co Nickel base alloys
US2875043A (en) * 1956-04-04 1959-02-24 Metallizing Engineering Co Inc Spray-weld alloys of the boron-silicon-nickel type
US2868667A (en) * 1956-10-12 1959-01-13 Wall Colmonoy Corp Method and composition for forming a porous metallic coating

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1300412B (en) * 1963-07-24 1969-07-31 Metco Inc Westbury Flame spray powder based on a self-flowing alloy and flame spray process
DE2432125A1 (en) * 1973-07-06 1975-01-23 Metco Inc FLAME SPRAYING MATERIALS
FR2505878A1 (en) * 1981-04-06 1982-11-19 Eutectic Corp POWDER FOR FLAME SPRAY IN A TORCH AND METHOD FOR MANUFACTURING THE SAME

Also Published As

Publication number Publication date
DE1198568B (en) 1965-08-12
US2936229A (en) 1960-05-10
GB843423A (en) 1960-08-04

Similar Documents

Publication Publication Date Title
FR1209669A (en) Improvements to alloys for metallization
FR1169008A (en) Metal framework for constructions
FR1199996A (en) Improvements to zirconium alloys
FR1165755A (en) Improvements to retractors for orthodontics
FR1194766A (en) Improvements to sliders for closures
FR1147723A (en) Improvements to reduction mechanisms for watchmaking
FR1178580A (en) Continuous metal casting
FR1143802A (en) Improvements to taps
FR1189277A (en) Improvements to faucets
FR1171684A (en) Improvements to faucets
FR1210395A (en) Improvements to shelves for shelves
FR1188921A (en) Improvements to pipe fittings
FR1165748A (en) Improvements to pipe fittings
FR1162263A (en) Improvements to taps
FR69648E (en) Improvements to taps
FR1155485A (en) Improvements made to metal plugs for symmetrical fittings
BE609273Q (en) Improvements to protective screens for vehicles
FR1171827A (en) Improvements to taps
FR1191783A (en) Improvements to anodes for electroplating
FR71785E (en) Improvements to pipe fittings
FR75786E (en) Improvements to collectors for dynamos
FR1209399A (en) Improvements to mycobacteriostats
FR1202029A (en) Improvements to transistrons
FR1160342A (en) Calendar for horticulturalists
FR1192281A (en) Improvements to nickel-molybdenum-iron alloys