Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5653298 | Vortex method | Norval Roland Dove, W. Gerald Lott | 1997-08-05 |
| 5632349 | Vortex drill bit | Norval Roland Dove, W. Gerald Lott | 1997-05-27 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5653298 | Vortex method | Norval Roland Dove, W. Gerald Lott | 1997-08-05 |
| 5632349 | Vortex drill bit | Norval Roland Dove, W. Gerald Lott | 1997-05-27 |