Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7331344 | Breathing device | Stuart Corner, Stephen Harrison | 2008-02-19 |
| 6151356 | Method and apparatus for phase detection in digital signals | Robert Spagnoletti, Adrian Sparks | 2000-11-21 |
| 5620400 | Mountain climbing exercise apparatus | — | 1997-04-15 |
| 4920877 | Wringer device | Thomas R. Oschmann | 1990-05-01 |
| 4889049 | Wringer device | Thomas R. Oschmann | 1989-12-26 |
| 4523516 | Actuator having Belleville washer configuration operating in concert with a piston cylinder member | Peter W. Austin | 1985-06-18 |
| 4445424 | Actuator having Belleville washer configuration operating in concert with a piston cylinder member | Peter W. Austin | 1984-05-01 |
| 4349175 | Valve actuator having a continuously charged accumulator | Neil H. Akkerman | 1982-09-14 |
| 4325535 | Actuator mechanism for a rotary valve or the like | — | 1982-04-20 |
| 4279272 | Flow line monitor pilot valve assembly | Neil H. Akkerman, Kip B. Goans | 1981-07-21 |
| 4225110 | Actuator for converting linear to rotary motion | Neil H. Akkerman, Gonzalo Vazquez | 1980-09-30 |