Number | Date | Country | Kind |
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2-257186 | Sep 1990 | JPX |
Number | Name | Date | Kind |
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4730293 | Pierce et al. | Mar 1988 | |
4787076 | Oeguchi et al. | Nov 1988 | |
5033040 | Fujita | Jul 1991 |
Number | Date | Country |
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63-094438 | Apr 1988 | JPX |
2-141932 | May 1990 | JPX |
Entry |
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T. Ishida, et al, "High Speed Optical Card Reader/Writer using Two Optical Sources," Central R&D Lab., EFTS Division, Omron Tateisi Electronics Co., pp. 4-265, 1989. |