| Number | Name | Date | Kind |
|---|---|---|---|
| D211952 | Ettinger et al. | Aug 1968 | |
| D253225 | Petralia et al. | Oct 1979 | |
| 3140344 | Slater et al. | Jul 1964 | |
| 4058358 | Carlisle | Nov 1977 | |
| 4456145 | Frank | Jun 1984 |
| Entry |
|---|
| Keptel Inc., brochure for The SNI-2220 Network Interface System. |
| Lippincott Industries, Inc., brochure, GL-600 Multi-Unit Network Interface Device, 9-1986. |
| Lippincott Industries, Inc., brochure, GL-700 Multi-Unit Network Interface Device. |