2 results for “Owens-Corning Fiberglas”
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Patent · February 3, 1970
Concentration of asbestos ore (US Patent 3,493,108, 1970)
Edward Martinez received US Patent No. 3,493,108 on February 3, 1970, filed May 10, 1967. The patent's description opens: This invention relates to concentration of asbestos ore.
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Patent · June 27, 1967
Concentration of asbestos ore (US Patent 3,328,233, 1967)
…No. 3,328,233 on June 27, 1967, filed July 31, 1964. It was assigned to American Smelting and Refining Co. The patent's description opens: This invention relates to concentration of serpentine type asbestos ore.