2 results for “Owens-Illinois”
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Patent · June 15, 1943
Process for making Cement Products (US Patent 2,322,194, 1943)
…14, 1939. It was assigned to United States Gypsum Co. The patent's description opens (from the scanned text): The present invention relates to an improved form of cementitious product and a process for its production.
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Patent · April 30, 1940
Water Resistant Cementitious Product (US Patent 2,198,776, 1940)
…1936. It was assigned to United States Gypsum Co. The patent's description opens (from the scanned text): The present invention relates to a water-resistant cementitious product, comprising a set mass of interlaced cement crystals…