Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7752933 | Speed controlled spring return actuator | Gerald R. Parsons | 2010-07-13 |
| 7559531 | Low torque ball valve with dynamic sealing | Kurt R. Thomas | 2009-07-14 |
| 7515433 | Method and apparatus for progressively connecting a controller to an external circuit of a building | Gerald R. Parsons | 2009-04-07 |
| 7070165 | Thermal isolator and controlled valve employing same | — | 2006-07-04 |
| D520861 | Locking stem extension | Gerald R. Parsons | 2006-05-16 |
| 5153493 | Non-bridge type electronic actuator control | Lary L. Field, Fred Fauerbach | 1992-10-06 |
| 5107678 | Floating fluid-operated actuator | Lary L. Field, Gerald R. Parsons | 1992-04-28 |
| 4817022 | Method and apparatus for automatic offset compensation in parameter-sensing transducer systems | James Mueller, Matthew S. Solar | 1989-03-28 |
| 4368502 | Lead-lag load lockout control | Steven D. Siden | 1983-01-11 |