Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6991046 | Expandable eccentric reamer and method of use in drilling | Coy M. Fielder, Rogerio H. Silva, William Christian Herben | 2006-01-31 |
| 4982801 | Flexible coupling for downhole motor | Mark D. Zitka | 1991-01-08 |
| D309827 | Water bottle pack | — | 1990-08-14 |