IP Library › Granted Patent US 4,630,689
Granted Patent Utility
US 4,630,689 · App. 06/708,207

Downhole pressure fluctuating tool

Inventors: Edward M. Galle, Billey E. Baker
Patented Case View Patent ↗
Granted: Dec 23, 1986 Filed: Mar 4, 1985
Inventors
Edward M. Galle
Billey E. Baker
Assignee (at issue)
Hughes Tool Company - USA

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Quick Facts
Patent No.
US 4,630,689
App. No.
06/708,207
Filed
1985-03-04
Granted
1986-12-23
Kind
A