IP Library › Patent Application 09744517
Patent Application Utility PCT National Stage
App. No. 09/744,517 · Confirmation No. 8484

HEARING AID HAVING IMPROVED SPEECH INTELLIGIBILITY DUE TO FREQUENCY-SELECTIVE SIGNAL PROCESSING, AND METHOD FOR OPERATING SAME

Inventors: Frank Wagner, Fred Zoeis
Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362 View Patent ↗
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2004-06-18 IFEE Issue Fee Payment (PTO-85B) 1 View
2004-04-22 LET. Miscellaneous Incoming Letter 1 View
2004-04-22 DRW Drawings-only black and white line drawings 2 View
2001-03-12 LET. Miscellaneous Incoming Letter 28 View
2001-03-12 LET. Miscellaneous Incoming Letter 28 View
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Quick Facts
App. No.
09/744,517
Filed
2001-03-12
Granted
2004-07-27
Examiner
LE, HUYEN D
Art Unit
2643
PTA
0 days