1 result for “Owens-Corning Fiberglas”
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Patent · June 2, 1970
High temperature traction rolls (US Patent 3,515,531, 1970)
…1967. It was assigned to PPG Industries Inc. The patent's description opens: The present invention is an improvement over the aforesaid Shorr invention in that by using a mixture containing as the essential ingredients, anthophyllite…