Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701387 | Storage tank water heater tempering system | — | 1997-12-23 |
| 5261597 | Temperature responsive 3-way line valve with shape memory alloy actuator | Maier Perlman, James M. Bell, Richard L. Martin | 1993-11-16 |
| 5115491 | Tempering system for storage tank water heaters utilizing inlet and outlet heat exchanger | Maier Perlman, James M. Bell | 1992-05-19 |