|
| US4833736 | 17 Nov 1987 | 30 May 1989 | | Seating assist apparatus |
| US4852849 | 17 Feb 1988 | 1 Aug 1989 | | Lifting seats |
| US4993777 | 18 Oct 1989 | 19 Feb 1991 | La-Z-Boy Chair Company | Recliner chair lift base assembly |
| US5011224 | 20 Nov 1989 | 30 Apr 1991 | | Arise-assist chair |
| US5314238 | 28 Sep 1992 | 24 May 1994 | La-Z-Boy Chair Company | Cam guide drive mechanism for power-assisted chairs |
| US5466046 | 19 Nov 1993 | 14 Nov 1995 | La-Z-Boy Chair Co. | Linear actuation drive mechanism for power-assisted chairs |
| US5482350 | 6 May 1994 | 9 Jan 1996 | La-Z-Boy Chair Company | Linear actuation drive mechanism for power-assisted chairs |
| US5513867 | 24 Aug 1993 | 7 May 1996 | University of Utah | Seat-lift wheelchair |
| US5601338 | 23 Mar 1995 | 11 Feb 1997 | Michigan Seat Company | Seat structure with adjustable suspension |
| US5651580 | 7 Jun 1995 | 29 Jul 1997 | La-Z-Boy Chair Company | Linear actuation drive mechanism for power-assisted chairs and base therefor |
| US5794911 | 5 Feb 1996 | 18 Aug 1998 | Milsco Manufacturing Company | Adjustable vehicle seat suspension |
| US5876085 | 27 Feb 1997 | 2 Mar 1999 | Milsco Manufacturing Company | Adjustable vehicle seat |
| US5927679 | 21 Apr 1997 | 27 Jul 1999 | Milsco Manufacturing Company | Adjustable vehicle seat suspension |
| US6186467 | 6 May 1999 | 13 Feb 2001 | Michigan Seat Company | Full seat adjustable suspension |
| US7000988 | 12 Aug 2003 | 21 Feb 2006 | Universal Product Development Company, LLC | Lift chair |
| US7874620 | 4 Apr 2008 | 25 Jan 2011 | Herman Miller, Inc. | Health care chair |
| USD303120 | 29 Dec 1986 | 29 Aug 1989 | Otto Nemenz International | Tilt plate assembly for photographic and television cameras |