Number | Name | Date | Kind |
---|---|---|---|
3956593 | Collins et al. | May 1976 | |
3991276 | Regnier et al. | Nov 1976 | |
4005272 | Collins et al. | Jan 1977 | |
4064370 | Coonce et al. | Dec 1977 | |
4142068 | Charronsel et al. | Feb 1979 | |
4160127 | Slana et al. | Jul 1979 | |
4322843 | Beuscher et al. | Mar 1982 |
Entry |
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Moridera et al., "Fetex Digital Switching System for Central Office, " Int. Conf. on Comm., Toronto, Canada, Jun. 4-7, 1978. |