Number | Name | Date | Kind |
---|---|---|---|
4639723 | Boughton | Jan 1987 | |
4769642 | Davis et al. | Sep 1988 | |
4873520 | Fisch et al. | Oct 1989 | |
4949085 | Fisch et al. | Aug 1990 | |
4965569 | Bennett et al. | Oct 1990 | |
4988991 | Motegi | Jan 1991 |
Entry |
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Motorola, Product Brochure, 1987, "PMR 2000-Personal Message Receiver". |