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| US4003598 | 6 Jun 1975 | 18 Jan 1977 | Grace M. Masiello | Chair mounted tray |
| US5022706 | 14 May 1990 | 11 Jun 1991 | | Adjustable keyboard chair |
| US5816649 | 14 Nov 1996 | 6 Oct 1998 | Steelcase Inc. | Chair with articulating tablet and interfacing table |
| US5931528 | 29 Jul 1998 | 3 Aug 1999 | Steelcase Inc. | Chair with articulating tablet and interfacing table |
| US6739653 | 19 Jul 2002 | 25 May 2004 | University of Central Florida | Wheelchair table with ergonomic aid |
