Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836500 | Assembly and method for installing and retaining valve seals | Andrew Pupillo | 1989-06-06 |
| 4779841 | Assembly and method for installing and retaining valve seals | Andrew Pupillo | 1988-10-25 |
| 4533114 | Fail-safe actuator for rotary valves | John M. Cory, Edward Varney, Andrew Pupillo | 1985-08-06 |