1 result for “Owens-Corning Fiberglas”
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Patent · December 31, 1929
Process of Refining Asbestos Ore (US Patent 1,741,869, 1929)
…1923. The patent's description opens (from the scanned text): This invention relates to a process for refining asbestos ore and has special reference to the separation of the gangue from the asbestos fibres without subjecting…