IP Library › Granted Patent US 4,771,805
Granted Patent Utility
US 4,771,805 · App. 06/566,134

Gate valve

Inventor: Tsorng-Jong Maa
Patented Case View Patent ↗
Granted: Sep 20, 1988 Filed: Nov 16, 1983
Inventor
Tsorng-Jong Maa
Assignee (at issue)
Vetco Gray, LLC

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Quick Facts
Patent No.
US 4,771,805
App. No.
06/566,134
Filed
1983-11-16
Granted
1988-09-20
Kind
A