1 result for “Owens-Corning Fiberglas”
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Patent · January 20, 1925
Insulating Material (US Patent 1,523,702, 1925)
…1925, filed March 3, 1922. The patent's description opens (from the scanned text): Our invention relates to heat insulating materials. ln the drawings Fig. 1 is a cross section of a pipe covering embodying our…