Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870872 | Cam mechanisms | — | 1989-10-03 |
| 4869215 | Cam mechanisms | — | 1989-09-26 |
| 4840164 | Method and apparatus for supercharging internal combustion engines | — | 1989-06-20 |
| 4838220 | Rotary valves | — | 1989-06-13 |
| 4828379 | Rear view mirror with perpendicular mirror surfaces | Stephen H. Richardson | 1989-05-09 |
| 4794810 | Linear actuator | — | 1989-01-03 |