Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4852679 | Wheelchair steering | — | 1989-08-01 |
| 4584902 | Valve actuators | — | 1986-04-29 |
| 4546671 | Valve actuators | — | 1985-10-15 |
| 4445075 | Valve actuators | — | 1984-04-24 |
| 4370902 | Drive mechanisms, more particularly for valve actuators | Peter Smith | 1983-02-01 |
| 4350081 | Fail-safe device for actuators | Christopher Warnett | 1982-09-21 |