1 result for “Owens-Illinois”
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Patent · May 21, 1929
Method for Separating Asbestos (US Patent 1,714,438, 1929)
…filed April 22, 1922. The patent's description opens (from the scanned text): The invention relates to a method for separating asbestos from rock and associated impurities occurring in the natural mineral, and simultaneously separating the…