1 result for “Owens-Illinois”
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Patent · November 13, 1934
Method of Coloring Materials (US Patent 1,980,905, 1934)
…1934, filed May 13, 1930. The patent's description opens (from the scanned text): This invention relates to a method of coloring sheet materials, made of calcareous materials, such as cement bonded asbestos and the like…