Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865079 | High pressure hydraulic flow control valve | John C. Martin, Roy G. R. Furzer | 1989-09-12 |
| 4860813 | Doors for vans | Jan Ballyns, John C. Martin | 1989-08-29 |
| 4825909 | High pressure hydraulic flow control valve | John C. Martin, Roy G. R. Furzer | 1989-05-02 |
| 4825190 | Safety system for preventing the unauthorized use of powered liftgates | — | 1989-04-25 |