Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7308956 | Method of securing a rotary cutter to a body of a down hole tool and a rotary cutter assembly | William Wenzel | 2007-12-18 |
| 5267905 | Sealed downhole motor drive shaft universal joint assembly | Douglas Wenzel, William Wenzel | 1993-12-07 |
| 5052501 | Adjustable bent housing | Douglas Wenzel, William Wenzel | 1991-10-01 |
| 4853927 | Method and circuit arrangement for decentralized controlled transmission rerouting | — | 1989-08-01 |
| 4325013 | Electrical tracer control system utilizing sine wave resolution | — | 1982-04-13 |