Number | Date | Country | Kind |
---|---|---|---|
3-025248 | Jan 1991 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4087651 | Taneda et al. | Feb 1978 | |
4209793 | Ueno | Jun 1980 | |
4656618 | Kaku et al. | Apr 1987 | |
4730293 | Pierce et al. | Mar 1988 | |
5012464 | Vedder et al. | Apr 1991 | |
5043965 | Iida et al. | Aug 1991 | |
5247504 | Akatsuka | Sep 1993 |
Number | Date | Country |
---|---|---|
2141932 | May 1990 | JPX |
2206069 | Aug 1990 | JPX |
Entry |
---|
T. Ishida, et al., "High Speed Optical Card Reader/Writer using Two Optical Sources," Electric Telecommunication Society at the National Great Autumn Meeting, C-325, p. 4-265, 1989. |