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PASSIVE HEADPHONE EQUALIZING

11/616,365 | U.S. Patent Application

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Location ELECTRONIC
Filed Dec. 27, 2006
Examiner SUHAN NI
Class 381
Art Group 2614
Patent No. 8,073,181
Case Type Utility - 381/384000
Status Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362
Parent 11/428,057 Patented
Child PCT/US07/88805 Published
Last Updated: 4 years ago
Date # Transaction