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GB600066A
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Method of producing hard metal composition
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US2179960A
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Agglomerated material in particular for electrical purposes and shaped bodies made therefrom
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US2148040A
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Method of manufacturing composite materials and shaped bodies thereof
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US2105166A
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Electrical heating element
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US2096924A
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Composite structural product and method of making the same
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US1959879A
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Production of hard metal alloys, especially for tools
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US2030229A
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Process of making compound structural material and shaped articles thereof
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GB361363A
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An improved tool alloy
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US1786393A
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Method of producing ferromolybdenum and ferrotungsten
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US1800758A
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Process for the production of chemically-pure tungsten trioxide
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US1629004A
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Process for the production of molybdenum trioxide and tungsten trioxide
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