Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877521 | Quick-change filter cartridge and head therefor | Raymond M. Petrucci, Bruce G. Taylor, James M. Padiall, Carl Palmer | 1989-10-31 |
| 4806240 | Adapter and cartridge assembly | Raymond M. Petrucci | 1989-02-21 |
| 4735716 | Quick-change filter cartridge and head therefor | Raymond M. Petrucci, Bruce G. Taylor, James M. Padilla, Carl Palmer | 1988-04-05 |