US946435A
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Carbon-holder.
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US938581A
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Carbid and method of manufacturing same.
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US946434A
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Carbon-holder.
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US889124A
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Manufacture of carbid.
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US946432A
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Method of manufacturing carbid and products of same.
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US946497A
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Method of manufacturing carbid.
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US1152506A
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Method of manufacturing carbid.
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US946511A
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Method of manufacturing carbid.
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US883110A
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Electric furnace.
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US966542A
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Method of making calcium carbid.
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US971445A
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Tapping element for melting-furnaces.
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US946510A
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Manufacture of calcium carbid.
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US946433A
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Manufacture of carbid.
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