1 result for “Owens-Corning Fiberglas”
-
Patent · March 17, 1959
Perlite insulation material (US Patent 2,878,131, 1959)
…March 17, 1959, filed October 28, 1957. It was assigned to International Minerals and Chemical Corp. The patent's description opens (from the scanned text): This invention relates to an improved light-weight thermal insulating material.