Number | Date | Country | Kind |
---|---|---|---|
58-178165 | Sep 1983 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3926088 | Davis et al. | Dec 1975 | |
4347405 | Davis | Aug 1982 | |
4448104 | Hoshii | May 1984 | |
4470334 | Barlow et al. | Sep 1984 |
Entry |
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Stephen B. Weinstein, "Smart Credit Cards: The Answer to Cashless Shopping," IEEE Spectrum, Feb. 1984, pp. 43-49. |