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Expired
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Hubert Seifarth
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Individual
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Individual
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Publication of GB190016307ApublicationCriticalpatent/GB190016307A/en
16,307. Seifarth, H. Sept. 13. Stone, artificial.-In the manufacture of artificial stone, alkali waste in the crude damp state is combined with lime and sand, slag, or ashes, and the stones or blocks, moulded under pressure, are hardened by superheated steam.
GB190016307D1900-09-131900-09-13Improvements in the Preparation of Artificial Stone.
ExpiredGB190016307A
(en)