Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9523498 | Heater for liquefied petroleum gas storage tank | George M. Zimmer, Michael J. Kirby | 2016-12-20 |
| 8951041 | Heater for liquefied petroleum gas storage tank | George M. Zimmer, Michael J. Kirby | 2015-02-10 |