IP Library › Granted Patent US 4,635,678
Granted Patent Utility
US 4,635,678 · App. 06/691,995

Flow control apparatus

Inventors: Charles P. Peterman, Julian D. Keithahn
Patented Case View Patent ↗
Granted: Jan 13, 1987 Filed: Jan 16, 1985
Inventors
Charles P. Peterman
Julian D. Keithahn
Assignee (at issue)
Hydril Company

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Quick Facts
Patent No.
US 4,635,678
App. No.
06/691,995
Filed
1985-01-16
Granted
1987-01-13
Kind
A