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1 result for “Owens-Corning Fiberglas”

1. Patent · February 16, 1943 · page 1

   Process of Treating Copper (US Patent 2,311,083, 1943)

   In the document: …to 1 hr., the time of boiling being regulated ac cording to the use to which the tubing is to be put and the degree of increased elasticity de sired. If buss bar copper or similar…