Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4815701 | Spring and seat assembly for ball valves | — | 1989-03-28 |
| 4601308 | Ball valve with seat loading mechanism | William S. Shelton | 1986-07-22 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4815701 | Spring and seat assembly for ball valves | — | 1989-03-28 |
| 4601308 | Ball valve with seat loading mechanism | William S. Shelton | 1986-07-22 |