Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5503406 | Assembly for live loading or valve packings | Leonard T. Armstrong, Raymond P. Champagne, Anthony Lennon | 1996-04-02 |
| 4744572 | All-metal, valve sealing mechanism | Bahman Sahba, Harry C. Champlin, Jr. | 1988-05-17 |
| 4533114 | Fail-safe actuator for rotary valves | Edward Varney, Jon A. Babcock, Andrew Pupillo | 1985-08-06 |
| 4306706 | Cryogenic valve seal | Ronald A. Olansen, Harry C. Champlin, Jr. | 1981-12-22 |
| 4261546 | Quarter-turn valve actuator | Ronald A. Olansen, Joseph A. Wucik, Jr. | 1981-04-14 |