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• Written by: Alfred Hugh Gallagher ×
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1 result for “Owens-Corning Fiberglas”

1. Patent · April 28, 1925

   Heat Insulation (US Patent 1,535,220, 1925)

   …1924. The patent's description opens (from the scanned text): The present invention is intended to 'pro- 50 wide a heat insulating structure in which the loose heat insulating material employed between the usual double walls…