Referenced by|
| US4538853 | 22 Dec 1983 | 3 Sep 1985 | | Chair for handicapped persons | | US4573736 | 4 Sep 1984 | 4 Mar 1986 | | Chair for handicapped persons | | US4884841 | 20 Jun 1988 | 5 Dec 1989 | | Seating assistance device | | US5027446 | 31 Aug 1990 | 2 Jul 1991 | | Toilet seat lift device | | US5219204 | 15 Oct 1990 | 15 Jun 1993 | | Recliner and elevator chair | | US5513867 | 24 Aug 1993 | 7 May 1996 | University of Utah | Seat-lift wheelchair | | US8113587 | 13 Jan 2010 | 14 Feb 2012 | | Portable lift chair | | USD648248 | 27 Sep 2010 | 8 Nov 2011 | | Wheelchair lift assist |
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