Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4540019 | Bellows sealed stem for rotary valve | Richard Tremblay | 1985-09-10 |
| 4516754 | Bent bellows sealed rotary valve | — | 1985-05-14 |
| 4513779 | Metering valve | John Thomas, Richard W. Conley | 1985-04-30 |
| 4462422 | Bellows sealed stem for rotary valve | Richard Tremblay | 1984-07-31 |
| 4452426 | Bent bellows sealed rotary valve | — | 1984-06-05 |