Number | Name | Date | Kind |
---|---|---|---|
1279831 | Berger | Sep 1918 | |
2957957 | Johnson | Oct 1960 | |
2974441 | Denner | Mar 1961 | |
2995866 | Johnson | Aug 1961 | |
3012365 | Kretzmer | Dec 1961 | |
3061973 | Oberdorf | Nov 1962 | |
3082002 | Goldfarb | Mar 1963 | |
3119201 | Brown | Jan 1964 | |
3142132 | Johnson | Jul 1964 | |
3192460 | Wolff et al. | Jun 1965 | |
3373526 | Parkin | Mar 1968 | |
3458950 | Tomaro | Aug 1969 | |
3568199 | Hartness | Mar 1971 | |
3624962 | Sykes | Dec 1971 | |
3664060 | Longnecker | May 1972 | |
3675927 | Gottlieb et al. | Jul 1972 | |
3770981 | Nelsen | Nov 1973 | |
3961441 | Sato | Jun 1976 | |
3995376 | Kimble et al. | Dec 1976 |
Number | Date | Country |
---|---|---|
454453 | Feb 1949 | CAX |
593161 | Mar 1959 | ITX |
Entry |
---|
Experimental Telephone Lets Disabled "Dial" by Voice, Bell Lab Rec. (U.S.A.), vol. 51, No. 9, Oct. 1973, p. 272. |