Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D297044 | Heat exchanger housing | — | 1988-08-02 |
| D292312 | Exhaust fan housing | — | 1987-10-13 |
| 4646817 | Air to air heat exchanger | — | 1987-03-03 |
| 4512392 | Heat exchange apparatus | Larry J. Benning | 1985-04-23 |