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1 result for “Union Carbide Corporation”

1. Patent · June 29, 1937 · page 4

   Protected Conduit (US Patent 2,085,441, 1937)

   In the document: …couplings extend ing between adjacent sections of the pairs of Semitubes and waterproof sealing material caulk ing the union of the couplings with each end of 3 around the said member and meeting to form end…