1 result for “Owens-Corning Fiberglas”
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Patent · March 7, 1939
Dyeing of Mineral Materials (US Patent 2,149,979, 1939)
…1939, filed October 28, 1937. It was assigned to Lehon CO. The patent's description opens (from the scanned text): The invention relates to the dyeing of siliceous materials, as for example, asbestos and the like…