| Number | Date | Country | Kind | 
|---|---|---|---|
| DM/010532 | Mar 1988 | IBX | 
| Number | Name | Date | Kind | 
|---|---|---|---|
| D197998 | Van Acker | Apr 1964 | |
| D210702 | Karow | Apr 1968 | |
| D250950 | Knodt et al. | Jan 1979 | |
| D281690 | Thomas | Dec 1985 | |
| D282513 | Wolford, Sr. | Feb 1986 | |
| D293173 | Chester | Dec 1987 | |
| D296800 | Benedetto et al. | Jul 1988 | |
| D297190 | Arnott | Aug 1988 | |
| D301415 | Fry et al. | Jun 1989 | |
| D313517 | Ugalde | Jan 1991 | |
| D315147 | Davis et al. | Mar 1991 | |
| D315261 | Ng et al. | Mar 1991 | |
| 4859092 | Makita | Aug 1989 | 
| Entry | 
|---|
| IBM Technical Disclosure Bulletin, Dec. 1981. | 
| Schoner Wohnen; 3/84; p. 59; Item #7. | 
| Sirco Computer Furn. & Accessories; 9/85; p. 155. |