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Expired
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Henri Herrenschmidt
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Individual
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Individual
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Publication of GB190720378ApublicationCriticalpatent/GB190720378A/en
20,378. Herrenschmidt, H. Sept. 24, 1906, [date applied for under Patents Act, 1901]. Firebricks; pottery.-Fireproof bricks and pottery for chemical and other industries are made from the homogeneous material obtained by fusing a mixture of magnesia 35 to 65 parts and silica 70 to 30 parts in an electric furnace.
GB190720378D1906-09-241907-09-12Improved Manufacture of Silicates of Magnesia
ExpiredGB190720378A
(en)