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DIGITAL WATERMARKS FOR CHECKING AUTHENTICITY OF PRINTED OBJECTS

09/938,870 | U.S. Patent Application

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Location ELECTRONIC
Filed Aug. 23, 2001
Examiner CHRISTOPHER J BROWN
Class 713
Art Group 2134
Patent No. 7,246,239
Case Type Utility - 713/176000
Status Patented Case
Child PCT/US02/27068 Published
Child 11/779,061 Patented
Child 10/45,654 Patented
Child 09/951,143 Patented
Child PCT/US01/31784 Published
Child 12/582,398 Patented
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Last Updated: 4 years, 6 months ago
Date # Transaction