| 5996367 |
Heat pump and air conditioning system compressor unloading method and apparatus |
— |
1999-12-07 |
| 5628199 |
Microprocessor-based controller |
Steven R. Hoglund, Kerry E. Ober, Philip Zumsteg, James M. Tuten, III, Jay R. Goetz |
1997-05-13 |
| 5438844 |
Microprocessor-based controller |
Steven R. Hoglund, Kerry E. Ober, Philip Zumsteg, James M. Tuten, III, Jay R. Goetz |
1995-08-08 |
| 4590771 |
Control system for defrosting the outdoor coil of a heat pump |
Jacob E. Shaffer, Jr., Wayne D. Dellinger |
1986-05-27 |
| 4563877 |
Control system and method for defrosting the outdoor coil of a heat pump |
— |
1986-01-14 |
| 4558818 |
Batch-type water heating apparatus |
— |
1985-12-17 |
| 4517807 |
Heat pump water heater with supplemental heat supply |
— |
1985-05-21 |
| 4498622 |
Quick recovery heat pump water heater |
— |
1985-02-12 |
| 4314456 |
Refrigerant condensing system |
— |
1982-02-09 |
| 4265299 |
Heat pump control system |
— |
1981-05-05 |
| 4221116 |
Temperature compensated control for air conditioning system or heat pump |
— |
1980-09-09 |
| 4220013 |
Pressure compensated control for air conditioning system or heat pump |
— |
1980-09-02 |