IP Library › Granted Patent US 4,706,747
Granted Patent Utility
US 4,706,747 · App. 06/801,521

Cementing plug

Inventor: David E. Schneider
Patented Case View Patent ↗
Granted: Nov 17, 1987 Filed: Nov 25, 1985
Inventor
David E. Schneider
Assignee (at issue)
Weatherford Holding U.S., Inc.

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Quick Facts
Patent No.
US 4,706,747
App. No.
06/801,521
Filed
1985-11-25
Granted
1987-11-17
Kind
A