IP Library › Granted Patent US 6,411,139
Granted Patent Utility
US 6,411,139 · Confirmation No. 1936

FREQUENCY DOUBLING CIRCUIT

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2019-09-20 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2019-09-20 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2019-09-13 MFEE.C.AD Maintenance Fee Address Change 2 View
2019-09-13 PA.. Power of Attorney 3 View
2019-09-13 R3.73 Assignee showing of ownership per 37 CFR 3.73 3 View
2019-09-13 C.AD Change of Address 2 View
2019-09-13 N417 Electronic Filing System Acknowledgment Receipt 2 View
2001-07-27 TRNA Transmittal of New Application 1 View
2001-07-27 SPEC Specification 12 View
2001-07-27 CLM Claims 2 View
2001-07-27 ABST Abstract 1 View
2001-07-27 DRW Drawings-only black and white line drawings 2 View
2001-07-27 OATH Oath or Declaration filed 2 View
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Quick Facts
Patent No.
US 6,411,139
App. No.
09/917,556
Filed
2001-07-27
Granted
2002-06-25
Art Unit
2816
PTA
-106 days