Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6974161 | Coupling device for connecting a replaceable filter element to a conduit | — | 2005-12-13 |
| 6730218 | Coupling device for connecting a replaceable filter element to a conduit | — | 2004-05-04 |
| 5667679 | Filter having a filter element quick-disconnect mount | Peter Sciandra | 1997-09-16 |
| 5346624 | Method and apparatus for treatment of aqueous solutions | Bruce L. Libutti | 1994-09-13 |
| 4707257 | Air/water distributor underdrain | Thomas A. Davis, Donald J. Butterworth | 1987-11-17 |