IP Library › Granted Patent US 6,665,021
Granted Patent Utility
US 6,665,021 · Confirmation No. 2415

SYSTEM AND PROCESS FOR FILTERING SINGLE TONE SIGNALS

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 Code Description Pages PDF
2021-10-04 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2021-10-04 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2021-10-01 PA.. Power of Attorney 2 View
2021-10-01 N417 Electronic Filing System Acknowledgment Receipt 2 View
2021-10-01 R3.73 Assignee showing of ownership per 37 CFR 3.73 3 View
2020-12-18 EBCC.AD Notice of Change of Address Place in File Wrapper Due to Electronic Business Center(EBC) Customer Number Update 1 View
2003-10-10 IFEE Issue Fee Payment (PTO-85B) 2 View
2001-02-05 TRNA Transmittal of New Application 4 View
2001-02-05 SPEC Specification 16 View
2001-02-05 CLM Claims 22 View
2001-02-05 ABST Abstract 1 View
2001-02-05 DRW Drawings-only black and white line drawings 5 View
2001-02-05 OATH Oath or Declaration filed 4 View
2001-02-05 TRNA Transmittal of New Application 4 View
2001-02-05 SPEC Specification 16 View
2001-02-05 CLM Claims 22 View
2001-02-05 ABST Abstract 1 View
2001-02-05 DRW Drawings-only black and white line drawings 5 View
2001-02-05 OATH Oath or Declaration filed 4 View
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Quick Facts
Patent No.
US 6,665,021
App. No.
09/776,970
Filed
2001-02-05
Granted
2003-12-16
Pub. No.
US20020105595A1
Art Unit
2614
PTA
0 days