Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D774593 | Envelope with window | Bryan J. Pulliam, Lewis Wayne Ayers | 2016-12-20 |
| 5267905 | Sealed downhole motor drive shaft universal joint assembly | Robert Wenzel, William Wenzel | 1993-12-07 |
| 5052501 | Adjustable bent housing | Robert Wenzel, William Wenzel | 1991-10-01 |