|
| US4075720 | 12 Jan 1977 | 28 Feb 1978 | | Support frames adapted for use with car seats and beds |
| US4127907 | 14 Dec 1977 | 5 Dec 1978 | | Support frames adapted for use with car seats and beds |
| US4615559 | 25 Mar 1985 | 7 Oct 1986 | | Folding table/bench combination |
| US5098160 | 30 Jan 1990 | 24 Mar 1992 | | Ergonomic seating system apparatus |
| US7314248 | 3 Mar 2005 | 1 Jan 2008 | | Portable workstation |
