IP Library › Patent Application 09743615
Patent Application Utility PCT National Stage
App. No. 09/743,615 · Confirmation No. 6041

METHOD AND APPARATUS FOR EXPANDING BAND OF AUDIO SIGNAL

Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362 View Patent ↗
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Quick Facts
App. No.
09/743,615
Filed
2001-01-12
Granted
2004-12-07
Art Unit
2644
PTA
0 days