Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4789387 | Dust collector | William J. Klimczak | 1988-12-06 |
| 4660779 | Multilayer precision wound filter cartridge | James R. Schmitz | 1987-04-28 |
| 4278454 | Filter apparatus with reverse flow cleaning | — | 1981-07-14 |