Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6481231 | Hot gas defrost refrigeration system | Kenneth E. Vogel | 2002-11-19 |
| 6286322 | Hot gas defrost refrigeration system | Kenneth E. Vogel | 2001-09-11 |
| 5586441 | Heat pipe defrost of evaporator drain | Wilbert J. Wilson | 1996-12-24 |
| 5046331 | Evaporative condenser | Kenneth E. Vogel | 1991-09-10 |
| 4756358 | Defrost heater support | — | 1988-07-12 |