1 result for “Owens-Corning Fiberglas”
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Patent · November 12, 1940
Article of Manufacture (Board) (US Patent 2,221,420, 1940)
…filed November 18, 1937. It was assigned to Johns Manville. The patent's description opens (from the scanned text): The invention is illustrated in the attached drawing and will be exemplified by description in connection therewith.