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4641349 | Flom et al. | Feb 1987 | |
4993068 | Plosenka et al. | Feb 1991 | |
5016282 | Tomono et al. | May 1991 | |
5291560 | Daugman | Mar 1994 | |
5572596 | Wildes et al. | Nov 1996 |
Number | Date | Country |
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WO 8605018 | Aug 1986 | WOX |
WO 9003070 | Mar 1990 | WOX |
WO 9425857 | Nov 1994 | WOX |
Entry |
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"Sleuthing by Computer", 8045 IEEE Spectrum, vol. 20 (1983) Jul., No. 7, New York, USA. |