Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7121477 | Sprinkler system with relief and backflow preventer valve and warning system | — | 2006-10-17 |
| 6827288 | Sprinkler system with relief and backflow preventer valve | — | 2004-12-07 |
| 5238219 | Thermostatic expansion valve | J. George Leimbach | 1993-08-24 |