Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4821563 | Apparatus for measuring weight, torque and side force on a drill bit | — | 1989-04-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4821563 | Apparatus for measuring weight, torque and side force on a drill bit | — | 1989-04-18 |