Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9636722 | Exhaust fan assembly | John William Enzenroth, Terry Lee Hrdina, Kishor Kashinath Khankari, Scott James Koeppel, Edward G. Legner +2 more | 2017-05-02 |
| 8647182 | Exhaust fan assembly | John William Enzenroth, Terry Lee Hrdina, Kishor Kashinath Khankari, Scott James Koeppel, Edward G. Legner +2 more | 2014-02-11 |
| 7682231 | Exhaust fan assembly | John William Enzenroth, Terry Lee Hrdina, Kishor Kashinath Khankari, Scott James Koeppel, Edward G. Legner +2 more | 2010-03-23 |
| 7048499 | In-line centrifugal fan | Timothy Kuski | 2006-05-23 |