Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9163866 | System pressure actuated charge compensator | Pete DEN BOER, Robert B. Noll | 2015-10-20 |
| 7167142 | Multi-user display system | Jonathan Anthony Duhig | 2007-01-23 |
| 4190199 | Combination heating system including a conventional furnace, heat pump and solar energy subsystem | Richard E. Cawley | 1980-02-26 |