Number | Name | Date | Kind |
---|---|---|---|
2772393 | Davis | Nov 1956 | |
3278919 | Fleming | Oct 1966 | |
3500366 | Chesney et al. | Mar 1970 | |
3666999 | Moreland, Jr. et al. | May 1972 | |
3910564 | Graham et al. | Oct 1975 | |
4104595 | Overzet | Aug 1978 | |
4166381 | Woo | Sep 1979 | |
4310806 | Ogasawara | Jan 1982 | |
4357834 | Kimura | Nov 1982 | |
4443754 | King | Apr 1984 | |
4470008 | Kato | Sep 1984 | |
4495821 | Terhune | Jan 1985 | |
4515015 | Kuhlman | May 1985 | |
4604898 | Gohin et al. | Aug 1986 | |
4646070 | Yasuhara et al. | Feb 1987 | |
4733556 | Meitzler et al. | Mar 1988 |
Number | Date | Country |
---|---|---|
0047812 | Dec 1978 | DEX |
Entry |
---|
Telephone and Telephone Exchanges, pp. 112-113. |