Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9458682 | Coiled tubing injector with limited slip chains | David W. McCulloch, Timothy S. Steffenhagen, William B. White | 2016-10-04 |
| 9151122 | Coiled tubing injector with limited slip chains | David W. McCulloch, Timothy S. Steffenhagen, William B. White | 2015-10-06 |
| 8544536 | Coiled tubing injector with limited slip chains | David W. McCulloch, Timothy S. Steffenhagen, William B. White | 2013-10-01 |
| D362490 | Combined barrier free tub and shower | George P. McAllister | 1995-09-19 |
| 4313075 | Programmable electronic speed control | David Lawhon | 1982-01-26 |