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1 result for “Owens-Corning Fiberglas”

1. Patent · November 29, 1938

   Shingle and Assembly of (US Patent 2,138,663, 1938)

   …1935. It was assigned to Johns Manville. The patent's description opens (from the scanned text): This invention relates to shingles and 'toan assembly thereof; r t There is extensiveus'e of composition shingles in roofing…