Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4286614 | High temperature ball valve | Charles C. Partridge | 1981-09-01 |
| 4266566 | Spring assembly for floating seat ring | Charles C. Partridge | 1981-05-12 |
| 4262691 | Cam means for ball valve seat rings | — | 1981-04-21 |