Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5725061 | Downhole drill bit drive motor assembly with an integral bilateral signal and power conduction path | Donald H. Van Steenwyk, James R. Higginbotham | 1998-03-10 |
| 5389003 | Wireline wet connection | Donald H. Van Steenwyk, Raymond W. Teys | 1995-02-14 |