Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869477 | Hydraulic engine mount with air bellows tuning | John F. Hoying | 1989-09-26 |
| 4867474 | Adaptive vehicle suspension system | — | 1989-09-19 |
| 4828234 | Hydraulic engine mount with self-pumping air bladder | John F. Hoying | 1989-05-09 |
| 4796874 | Electronic hydraulic mount with continuously variable control | John F. Hoying | 1989-01-10 |