1 result for “Owens-Corning Fiberglas”
-
Patent · April 2, 1957
Fire resistant structural units (US Patent 2,787,345, 1957)
…1957, filed November 19, 1952. The patent's description opens (from the scanned text): This invention relates to the production of structural units, such as redoors, and in particular to a type of unit having an…