Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884995 | Hydraulic torque impulse generator | — | 1989-12-05 |
| 4854916 | Hydraulic torque impulse generator with bypass mechanism | Sven P. J. Westerberg | 1989-08-08 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884995 | Hydraulic torque impulse generator | — | 1989-12-05 |
| 4854916 | Hydraulic torque impulse generator with bypass mechanism | Sven P. J. Westerberg | 1989-08-08 |