Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7222642 | Enhanced water valve tube stop | Michael R. DuHack | 2007-05-29 |
| 6751978 | Transition fitting | Jay P. Griswold, Philip C. Hawken, Robert Moses | 2004-06-22 |
| 6722575 | Temperature sensing adapter and automatic temperature regulating mixing valve constructed therewith | Philip C. Hawken, James E. Pearson | 2004-04-20 |