1 result for “Owens-Corning Fiberglas”
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Patent · November 27, 1956 · page 3
Production of mixed fibrous sheet material (US Patent 2,772,157, 1956)
In the document: …for one-half hour. The glass yarn was of the type commonly used for polyester impregnation carrying a coating of the Werner type chro mium compound previously referred to (Owens Corning #863). This was rescreened to…