1 result for “Union Carbide Corporation”
-
Patent · April 6, 1971 · page 2
Stopping lost circulation in well drilling (US Patent 3,574,099, 1971)
In the document: …container 10 has a top plug 11 held Tulsa, Okla., assignors to Pan American Petroleum in place by-a-cap ring 12. A seal 13 is provided between Corporation, Tulsa, Okla. the container and top plug…