Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4767427 | Cartridge filter mounting apparatus | Norman D. Phillips, Joseph G. Polscer | 1988-08-30 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4767427 | Cartridge filter mounting apparatus | Norman D. Phillips, Joseph G. Polscer | 1988-08-30 |