1 result for “Owens-Corning Fiberglas”
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Patent · July 20, 1948
Insulating Board (US Patent 2,445,415, 1948)
…1948, filed February 16, 1944. It was assigned to Keasbey and Mattison Co. The patent's description opens (from the scanned text): This invention relates to panel boards and particularly to panel boards for electrical apparatus.