Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838345 | Combined air conditioning and ventilation assembly | William Rahn | 1989-06-13 |
| 4779671 | Cooling, heating and ventilation system | — | 1988-10-25 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838345 | Combined air conditioning and ventilation assembly | William Rahn | 1989-06-13 |
| 4779671 | Cooling, heating and ventilation system | — | 1988-10-25 |