1 result for “Union Carbide Corporation”
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Patent · January 16, 1951 · page 6
Sealing device having interbonded rigid and flexible molded portions (US Patent 2,538,198, 1951)
In the document: …are wider than ture area a firm union is established between the the final axial width of the device and hence ex mounting portion 3 of rigid plastic material and tend inwardly about both sides of…