Number | Name | Date | Kind |
---|---|---|---|
4256928 | Lesea et al. | Mar 1981 | |
4436963 | Cottrell et al. | Mar 1984 | |
4567324 | Smith et al. | Jan 1986 | |
4634811 | Curtin et al. | Jan 1987 | |
4701950 | Curtin et al. | Oct 1987 |
Entry |
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"Diavox Courier 700, Digital System Telephone for MD110", J. Reinius et a Ericsson Review, No. 2, 1982, pp. 58-66. |