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VALIDATION SELF VALIDATING SECURITY DOCUMENTS WITH DIGITAL WATERMARKS

09/442,780 | U.S. Patent Application

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Location FILE REPOSITORY (FRANCONIA)
Filed Nov. 18, 1999
Examiner MATTHEW C BELLA
Class 382
Art Group 2621
Patent No. 6,389,151
Case Type Utility - 382/135000
Status Patented Case
Parent 60/109,259 Expired
Child 10/11,129 Patented
Child 11/286,154 Patented
Child 11/626,150 Patented
Child 12/644,534 Patented
Child 10/326,575 Abandoned
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Last Updated: 1 year ago
Date # Transaction