Electric furnace for medium temperatures particularly for melting copper and its alloys.
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Electric furnace.
CA141534A
Electrical furnace
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Electric furnace.
GB191108901A
Electric Furnace.
CA97368A
Apparatus for reducing ores and refining metals
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Revolving electric furnace.
GB189811604A
Improvements in and connected with the Electro Metallurgic Production of Iron, Steel, and their Alloys with Chromium, Tungsten, Nickel, Manganese, and the like.