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AUTHENTICATION USING A DIGITAL WATERMARK

10/286,517 | U.S. Patent Application

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Location ELECTRONIC
Filed Nov. 1, 2002
Examiner DAVID J PEARSON
Class 713
Art Group 2438
Patent No. 8,505,108
Case Type Utility - 713/176000
Status Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362
Parent 09/935,755 Patented
Parent 09/640,806 Patented
Parent 09/169,088 Patented
Parent 08/637,531 Patented
Parent 08/534,005 Patented
Parent 08/438,159 Patented
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Last Updated: 4 years, 9 months ago
Date # Transaction