Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D384084 | Rotary cone drill bit | Harry M. Campos, Jr. | 1997-09-23 |
| 5624002 | Rotary drill bit | — | 1997-04-29 |
| 5606895 | Method for manufacture and rebuild a rotary drill bit | — | 1997-03-04 |
| 5595255 | Rotary cone drill bit with improved support arms | — | 1997-01-21 |