Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5853572 | Home water purification system | Roy W. Kuennen, Dennis J. Kool, Ronald C. Markham, Bradley J. Pippel, Dennis E. Kidd +1 more | 1998-12-29 |
| 5698091 | Home water purification system with filter end of life monitor | Roy W. Kuennen, Dennis J. Kool, Ronald C. Markham, Bradley J. Pippel, Dennis E. Kidd +1 more | 1997-12-16 |
| 5536395 | Home water purification system with automatic disconnecting of radiant energy source | Roy W. Kuennen, Dennis J. Kool, Ronald C. Markham, Bradley J. Pippel, Dennis E. Kidd +1 more | 1996-07-16 |