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4238524 | LaLiberte et al. | Dec 1980 | |
4812171 | Brettle et al. | Mar 1989 | |
5267756 | Molee et al. | Dec 1993 | |
5310222 | Chatwin et al. | May 1994 | |
5380047 | Molee et al. | Jan 1995 | |
5521984 | Denenberg et al. | May 1996 | |
5673338 | Denenberg et al. | Sep 1997 | |
5837042 | Lent et al. | Nov 1998 | |
5873604 | Phillips | Feb 1999 | |
6030000 | Diamond | Feb 2000 | |
6200628 | Rozumek et al. | Mar 2001 |
Entry |
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Verification Technologies, Inc., Intrinsic Signature Identification System, Internet Page at www.netventure.com/vti/isis/main.htm, pp. 1-2 No date. |
Total Sports Concepts, Tracercode, Internet Page at www.totalsportsconcepts.com/Authenticity.html, pp. 1-2 No date. |