Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7300278 | Gas fired portable unvented infrared heater | Brian S. Vandrak, John D. DuRoss, Jr. | 2007-11-27 |
| 6884065 | Gas fired portable unvented infrared heater | Brian S. Vandrak, John D. DuRoss, Jr. | 2005-04-26 |
| 6648635 | Gas-fired portable unvented infrared heater for recreational and commercial use | Brian S. Vandrak, John D. DuRoss, Jr. | 2003-11-18 |
| 6340298 | Gas-fired portable unvented infrared heater for recreational and commercial use | Brian S. Vandrak, John D. DuRoss, Jr. | 2002-01-22 |