IP Library › Granted Patent US 6,721,673
Granted Patent Utility
US 6,721,673 · Confirmation No. 7930

ESTIMATING A PLURALITY OF TONES IN AN INPUT SIGNAL

Inventor: Yong Rao
Patented Case View Patent ↗ View Publication ↗
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 Code Description Pages PDF
2005-01-25 COCOUT Certificate of Correction - Post Issue Communication 1 View
2004-12-14 C.AD Change of Address 1 View
2004-02-09 IFEE Issue Fee Payment (PTO-85B) 1 View
2003-12-15 LET. Miscellaneous Incoming Letter 3 View
2002-01-03 TRNA Transmittal of New Application 3 View
2002-01-03 SPEC Specification 45 View
2002-01-03 CLM Claims 45 View
2002-01-03 ABST Abstract 1 View
2002-01-03 DRW Drawings-only black and white line drawings 28 View
2002-01-03 OATH Oath or Declaration filed 2 View
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Quick Facts
Patent No.
US 6,721,673
App. No.
10/037,620
Filed
2002-01-03
Granted
2004-04-13
Pub. No.
US20030040876A1
Art Unit
2857
PTA
0 days