Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4515347 | Valve seat structure | Willard J. Sitton | 1985-05-07 |
| 4401292 | Valve seat structure | — | 1983-08-30 |
| 4188016 | Spacer carriers for floating seats in gate valves | — | 1980-02-12 |