Number | Name | Date | Kind |
---|---|---|---|
3798507 | Damon et al. | Mar 1974 | |
3952232 | Coules | Apr 1976 | |
4064551 | Lightfoot | Dec 1977 | |
4233646 | Leung et al. | Nov 1980 | |
4313150 | Chu | Jan 1982 | |
4445740 | Wallace | May 1984 | |
4564250 | Klein et al. | Jan 1986 | |
4596907 | LaGreco et al. | Jun 1986 | |
4606591 | Bloch | Aug 1986 | |
4632588 | Fitzpatrick | Dec 1986 | |
4648009 | Beun et al. | Mar 1987 |
Entry |
---|
"Central Control and Switching: SL-1 Common Equipment" by Alan Chapman and Jack Reid, Telesis, Fall 1975, pp. 78 and 79. |