Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8690548 | Mobile heat pump | — | 2014-04-08 |
| 7207188 | Heat pump system | — | 2007-04-24 |
| 7003964 | Heat pump system | — | 2006-02-28 |
| 6739139 | Heat pump system | — | 2004-05-25 |
| 6216722 | Freeze-resistant hydrant | — | 2001-04-17 |
| 5725365 | Rolling diaphragm seal arrangement for a submersible pump system | Charles Solomon, Dale F Solomon | 1998-03-10 |
| 5275014 | Heat pump system | — | 1994-01-04 |
| 5205932 | Point-of-use water purification appliance | Bruce Benefield | 1993-04-27 |
| 5129236 | Heat pump system | — | 1992-07-14 |
| 4998558 | Solar water heating system | — | 1991-03-12 |
| 4917079 | Solar water heating system | — | 1990-04-17 |
| 4666376 | Solar powered pump assembly | — | 1987-05-19 |
| 4621679 | Water system valve for draining heat exchangers | Hugo Byers | 1986-11-11 |