|
| US4047393 | 8 Oct 1976 | 13 Sep 1977 | General Motors Corporation | Refrigerator forced air condenser filter |
| US4754697 | 11 Dic 1986 | 5 Jul 1988 | Suncourt Holdings Inc. | Portable fan device for forced air heating |
| US4809593 | 11 Dic 1986 | 7 Mar 1989 | Suncourt Holdings Inc. | Portable fan device for forced air heating |
| US4941901 | 7 Jul 1989 | 17 Jul 1990 | U.S. Natural Resources, Inc., | Retrofit drainage trough for installation on pre-existent cabinet contained, wall supported air conditioners |
| US5489238 | 16 Sep 1994 | 6 Feb 1996 | | Portable fan booster for air vents |
