| Number | Name | Date | Kind |
|---|---|---|---|
| D277816 | Kleinert et al. | Mar 1985 | |
| D287554 | Radtke | Jan 1987 | |
| D291633 | Merzon | Sep 1987 | |
| D321999 | Hasuike | Dec 1991 | |
| 394377 | Kieter | Dec 1888 | |
| 2200319 | Zalkind | May 1940 | |
| 2667392 | Sexton | Jan 1954 | |
| 3003839 | Bloom et al. | Oct 1961 | |
| 3203744 | Batke | Aug 1965 | |
| 3446544 | Serwer | May 1969 | |
| 3751127 | Black et al. | Aug 1973 | |
| 3909078 | Riley | Sep 1975 | |
| 4501456 | Schafer | Feb 1985 | |
| 4512480 | Evenson | Apr 1985 | |
| 4544213 | Long et al. | Oct 1985 | |
| 4624509 | Ramsey | Nov 1986 | |
| 4634193 | Liu | Jan 1987 | |
| 4745775 | Bussan et al. | May 1988 | |
| 4856855 | Hasuike | Aug 1989 |
| Number | Date | Country |
|---|---|---|
| 1381424 | Nov 1964 | FRX |
| 318158 | Feb 1957 | CHX |
| Entry |
|---|
| Global .COPYRGT.1987 p. 44; Storage Cabinet #104830 Top Left Center on Page (Des. LIB. Box C-44). |
| Pp.9-17, 21 & 23 from Perma Products Magazine 1993. |
| Pp. 15-20 from Misco Magazine - 1994 Fall Computer Products Catalog. |