1 result for “Owens-Corning Fiberglas”
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Patent · December 9, 1924
Fire Resistant Shingle and Method of Making Same (US Patent 1,518,857, 1924)
…filed April 18, 1923. The patent's description opens (from the scanned text): This invention relates to fire-resistant The coating of magnesite and asbestos is shingles and a method of making same. sufiiciently elastic and…