Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4413511 | System for measuring cuttings and mud carryover during the drilling of a subterranean well | — | 1983-11-08 |
| 4396063 | Process and system for providing multiple streams of wet steam having substantially equal quality for recovering heavy oil | — | 1983-08-02 |
| 4391135 | Automatic liquid level monitor | Billy G. Ballard | 1983-07-05 |
| 4389164 | Automatic liquid level controller | Billy G. Ballard | 1983-06-21 |
| 4318298 | Automatic liquid level monitor | Billy G. Ballard | 1982-03-09 |
| 4318674 | Automatic liquid level controller | Billy G. Ballard | 1982-03-09 |