1 result for “Owens-Illinois”
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Patent · March 18, 1941
Building Insulation (US Patent 2,235,542, 1941)
…Patent No. 2,235,542 on March 18, 1941, filed August 24, 1937. The patent's description opens (from the scanned text): This invention relates to building insulation and to the method of forming the same.