Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8695946 | Replaceable suspension assembly and method of attachment | — | 2014-04-15 |
| 7735565 | Dual-saddle ear support apparatus | Lawrence E. Wells, Neil Edward West, Guy L. McClung, III | 2010-06-15 |
| 7419012 | Wellbore top drive systems | — | 2008-09-02 |
| 5448603 | Pressure-sensitive variable-resistance hygroscopic fluid detector, and method | — | 1995-09-05 |
| 4877093 | Spring actuated power swivel support rollers | David B. Ford, Leroy R. Rateike | 1989-10-31 |
| 4813498 | Active counterbalance for a power swivel during well drilling | David B. Ford | 1989-03-21 |
| 4809792 | Support system for a top driven drilling unit | — | 1989-03-07 |
| 4649258 | Water treatment for water injection plasma arc cutting apparatus | — | 1987-03-10 |
| 4429459 | Electrical terminal with cavity compensator | — | 1984-02-07 |
| 4288139 | Trifurcated card edge terminal | Robert F. Cobaugh, Attalee S. Taylor | 1981-09-08 |