Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4759256 | Tensioner recoil control apparatus | Sheldon L. Kovit, Bryan K. Yam | 1988-07-26 |
| 4724866 | Speed control valve | Howard J. Bates, Willard D. Childs, Eugene Matsuda | 1988-02-16 |
| 4688764 | Crown block compensator | Fred R. Foreman, Willard D. Childs | 1987-08-25 |
| 4620692 | Crown block compensator | Fred R. Foreman | 1986-11-04 |
| 4466488 | Position indicator for drill string compensator | Gerald W. Gilson, Fred C. Tilker, James W. Albert | 1984-08-21 |
| 4449854 | Motion compensator system | — | 1984-05-22 |
| 4421173 | Motion compensator with improved position indicator | Bruce Beakley | 1983-12-20 |
| 4411454 | Underwater wellhead connector | John D. Smith | 1983-10-25 |
| 4244628 | Guide roller assembly | Michael R. Scalf, Sr. | 1981-01-13 |