Number | Date | Country | Kind |
---|---|---|---|
2-238480 | Sep 1990 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4204398 | Lemelson | May 1980 | |
4315332 | Sakami et al. | Feb 1982 |
Number | Date | Country |
---|---|---|
60-056286 | Apr 1985 | JPX |
Entry |
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Motorola, Incorporation, "DYNA T.A.C. Cellular Mobile Telephone General Description" Jun. 15, 1983. |