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SOUND SYSTEM AND METHOD OF SOUND REPRODUCTION

10/74,604 | U.S. Patent Application

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Location ELECTRONIC
Filed Feb. 11, 2002
Examiner XU MEI
Class 381
Art Group 2615
Patent No. 7,254,239
Case Type Utility - 381/017000
Status Patented Case
Parent 60/267,952 Expired
Child 10/339,357 Patented
Child 11/762,725 Patented
Child 10/937,796 Patented
Child 11/416,626 Abandoned
Child 12/277,245 Abandoned
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Last Updated: 4 years, 4 months ago
Date # Transaction