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Ottokar Serpek
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Individual
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Publication of GB191029299ApublicationCriticalpatent/GB191029299A/en
29,299. Serpek, O. Aug. 11, [Convention date]. Drawings to Specification. Resistances for furnaces consist of aluminium nitride, 60-80 parts, and carbon, 40-20 parts, made by baking the nitride and tar. They pass diametrically across a tube furnace, and may be in two parts in contact at the middle, facilitating replacement. They may be thinner at the parts within the furnace.
GB191029299D1910-08-111910-12-16Improvements in Revolving Electrical Furnaces.
ExpiredGB191029299A
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