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SOUND SYSTEM AND METHOD OF SOUND REPRODUCTION

12/561,607 | U.S. Patent Application

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Location ELECTRONIC
Filed Sept. 17, 2009
Examiner XU MEI
Class 381
Art Group 2614
Patent No. 7,974,425
Case Type Utility - 381/307000
Status Patented Case
Parent 11/762,725 Patented
Parent 10/74,604 Patented
Parent 60/267,952 Expired
Child 13/154,364 Abandoned
Last Updated: 1 year, 7 months ago
Date # Transaction