Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4679545 | Gas-fired outdoor spa and hot tub heater | — | 1987-07-14 |
| 4537117 | Fresh air device for mobile home or other dwelling | Alan R. Zimmerman | 1985-08-27 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4679545 | Gas-fired outdoor spa and hot tub heater | — | 1987-07-14 |
| 4537117 | Fresh air device for mobile home or other dwelling | Alan R. Zimmerman | 1985-08-27 |