IP Library › Granted Patent US 4,692,081
Granted Patent Utility
US 4,692,081 · App. 06/705,102

Riser pipe elevator

Inventors: William Duffy Bennett, Angel F. Jimenez
Patented Case View Patent ↗
Granted: Sep 8, 1987 Filed: Feb 25, 1985
Inventors
William Duffy Bennett
Angel F. Jimenez

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Quick Facts
Patent No.
US 4,692,081
App. No.
06/705,102
Filed
1985-02-25
Granted
1987-09-08
Kind
A