Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5232201 | Plastic ball valve stem seal | Ricky E. Spears, Frank D. Sears | 1993-08-03 |
| 5178363 | Valve stem sealing means for prevention of fugitive emissions | John D. Icenhower | 1993-01-12 |
| 5169124 | Method for assembling a plastic ball valve | Ricky E. Spears, Frank D. Sears | 1992-12-08 |
| 5165658 | Plastic ball valve ball seal means | Ricky E. Spears, Frank D. Sears | 1992-11-24 |
| 5129624 | Valve stem sealing means for prevention of fugitive emissions | John D. Icenhower | 1992-07-14 |