Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5649603 | Downhole tools having circumferentially spaced rolling elements | Neil Andrew Abercrombie Simpson | 1997-07-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5649603 | Downhole tools having circumferentially spaced rolling elements | Neil Andrew Abercrombie Simpson | 1997-07-22 |