Citada por|
| US4379429 | 4 Feb 1981 | 12 Abr 1983 | Triumph-Adler A.G. | Height and inclination adjustable support shelf | | US4441432 | 1 May 1981 | 10 Abr 1984 | Tiffany Industries, Inc. | Tilting table | | US5483902 | 14 Sep 1993 | 16 Ene 1996 | | Adjustable work surface for computer stations |
|
