Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882061 | Filter apparatus | Raymond M. Petrucci, Bruce Hafner, Bruce G. Taylor | 1989-11-21 |
| 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 |