Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6352407 | Blade assembly for fan apparatus | D. Lee Hill, Frank E. Cahill, Hamid Massali | 2002-03-05 |
| 6283709 | Variable position fan assembly | D. Lee Hill | 2001-09-04 |
| 6077043 | Impeller for a fan and a method for making same | D. Lee Hill, Hamid Massali | 2000-06-20 |
| 5863182 | Fan blade flow enhancing device | D. Lee Hill, Hamid Massali | 1999-01-26 |
| 5795133 | Hinged fan guard with snap fit | D. Lee Hill, Steven E. Woosley | 1998-08-18 |