IP Library › Granted Patent US 4,732,061
Granted Patent Utility
US 4,732,061 · App. 07/023,384

Power tongs and clamping units therefor

Inventor: Michael C. Dinsdale
Patented Case View Patent ↗
Granted: Mar 22, 1988 Filed: Mar 9, 1987
Inventor
Michael C. Dinsdale
Assignee (at issue)
National Oilwell, Inc.

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Quick Facts
Patent No.
US 4,732,061
App. No.
07/023,384
Filed
1987-03-09
Granted
1988-03-22
Kind
A