Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4776369 | Check valve having snap-on clamping sleeve | Glenn H. Mackal | 1988-10-11 |
| 4754895 | Drain closure | Jacek M. Weinheimer | 1988-07-05 |
| 4744391 | Flow control valve | — | 1988-05-17 |
| 4681132 | Check valve with preset cracking pressure | — | 1987-07-21 |