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INEXPENSIVE COMPUTER-AIDED LEARNING METHODS AND APPARATUS FOR LEARNERS

09/290,770 | U.S. Patent Application

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Location FILE REPOSITORY (FRANCONIA)
Filed April 13, 1999
Examiner JOE H CHENG
Class 434
Art Group 3713
Patent No. 6,398,556
Case Type Utility - 434/219000
Status Patented Case
Parent 09/110,569 Patented
Parent 09/273,392 Patented
Child 10/113,225 Patented
Child 90/6,915 -
Child 10/692,274 Patented
Child 11/586,307 Patented
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Last Updated: 6 years, 1 month ago
Date # Transaction