1 result for “Owens-Corning Fiberglas”
-
Patent · December 30, 1924
Semi-refractory Heat Insulating Material and Method of Making Same (US Patent 1,520,893, 1924)
…It was assigned to Celite Co. The patent's description opens (from the scanned text): The present invention is an important improvement upon the art in that I have devised a method of manufacture by which…