Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6221245 | Non-chemical scale prevention and chlorine removal water filter | — | 2001-04-24 |
| D370522 | Magnetic water treatment filter | — | 1996-06-04 |
| 4502953 | Water purifying apparatus with air check valve and filter condition indication | Robert E. Marsh | 1985-03-05 |