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US1903409A
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Process of making iron-chromium nickel alloys
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US1720313A
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Anode for chromium plating
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US1720312A
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Anode for chromium plating
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US1567898A
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Process of making rustless iron and similar alloys
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US1429272A
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Method of purifying tin-bearing ferrotungsten
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CA153218A
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Method of purifying tungsten ore
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CA153097A
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Tungsten producing method
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CA153100A
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Method of producing tungsten
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US930027A
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Method of reducing ores.
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US930028A
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Method of reducing ores.
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CA116775A
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Reduction of metallic sulphides
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CA110425A
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Vanadium production
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CA110429A
|
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Production of refractory metal alloys
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CA110654A
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Cooling jacket for elctric furnace electrodes
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CA110427A
|
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Reduction of metallic oxide
|
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CA110431A
|
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Production of carbon alloy
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CA111225A
|
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Method of treating iron or steel
|
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CA110004A
|
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Reduction of metallic sulphide
|
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CA110426A
|
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Alloy for the treatment of iron or steel
|
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US876313A
|
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Process of reducing metallic sulfids and producing vanadium.
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