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ES172498A1
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A turntable for electric ovens and a procedure for its construction
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ES172149A1
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A procedure to treat the load in fusion electric ovens
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ES167455A1
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A procedure in the manufacture of alloys with low carbon content
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A procedure to manufacture charcoal electrodes
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ES157516A1
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A provision for the suspension of electrodes
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ES157324A1
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A disposition on autocoction electrodes
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ES157159A1
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A provision on autocoction electrodes
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ES156587A1
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Diposition of electrodes in ovens for aluminum
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ES148197A1
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A continuous electrode
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