Number | Name | Date | Kind |
---|---|---|---|
D317756 | Fabri | Jun 1991 | |
3876863 | Boone | Apr 1975 | |
3984075 | Bahner et al. | Oct 1976 | |
4181966 | Wenninger et al. | Jan 1980 | |
4359222 | Smith, III et al. | Nov 1982 | |
4388689 | Hayman et al. | Jun 1983 | |
4460965 | Trehn et al. | Jul 1984 | |
4530069 | Desrochers | Jul 1985 | |
4545023 | Mizzi | Oct 1985 | |
4569421 | Sandstedt | Feb 1986 | |
4650977 | Couch | Mar 1987 | |
4703160 | Narishima et al. | Oct 1987 | |
4725694 | Auer et al. | Feb 1988 | |
4727245 | Dobbins et al. | Feb 1988 | |
4730186 | Koga et al. | Mar 1988 | |
4734710 | Sato et al. | Mar 1988 | |
4773032 | Uehara et al. | Sep 1988 | |
4776714 | Sugiura et al. | Oct 1988 | |
4794634 | Torihata et al. | Dec 1988 | |
4853682 | Asano et al. | Aug 1989 | |
4860372 | Kuzunuki et al. | Aug 1989 | |
4877947 | Mori | Oct 1989 | |
4881839 | Grimm | Nov 1989 | |
4916441 | Gombrich | Apr 1990 | |
4926010 | Citron | May 1990 | |
5044965 | Hayasaka | Sep 1991 | |
5047615 | Fukumoto et al. | Oct 1991 | |
5055660 | Bertagna et al. | Oct 1991 | |
5057676 | Komaki | Oct 1991 |
Number | Date | Country |
---|---|---|
2853624 | Jul 1980 | DEX |
56-129944 | Oct 1981 | JPX |
62-263077 | Nov 1987 | JPX |
Entry |
---|
IBM Technical Disclosure Bulletin, "Keyboard Equipped with Two Key Layouts", vol. 30, No. 7, Dec. 1987, pp. 428 and 429. |
IBM Technical Disclosure Bulletin, "Low Cost Versatile Control Panel", vol. 28, No. 7, Dec. 1985, pp. 2948 and 2949. |
IBM Technical Disclosure Bulletin, vol. 24, No. 9, Feb., 1982, pp. 4630 and 4631, "Restaurant System", C. E. Wilkinson, Jr. |