Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4271858 | Butterfly valve having temperature responsive sealing means | Philip J. Burton | 1981-06-09 |
| 4244387 | Rotary valve with temperature responsive seal means | — | 1981-01-13 |