IP Library › Granted Patent US 6,637,866
Granted Patent Utility
US 6,637,866 · Confirmation No. 4692

ENERGY EFFICIENT HEATER STACK USING DLC ISLAND

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2020-10-02 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2020-10-02 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2020-09-21 PA.. Power of Attorney 5 View
2020-09-21 N417 Electronic Filing System Acknowledgment Receipt 2 View
2020-09-21 R3.73 Assignee showing of ownership per 37 CFR 3.73 3 View
2020-07-21 N572 Response - Re: Informal Power of Attorney (PTOL-308) 1 View
2020-07-16 PA.. Power of Attorney 6 View
2020-07-16 N417 Electronic Filing System Acknowledgment Receipt 2 View
2014-07-17 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2014-07-17 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2014-06-27 PA.. Power of Attorney 1 View
2014-06-27 R3.73 Assignee showing of ownership per 37 CFR 3.73 2 View
2014-06-27 N417 Electronic Filing System Acknowledgment Receipt 2 View
2003-08-12 LET. Miscellaneous Incoming Letter 1 View
2003-08-12 DRW Drawings-only black and white line drawings 4 View
2002-06-07 TRNA Transmittal of New Application 2 View
2002-06-07 SPEC Specification 16 View
2002-06-07 CLM Claims 4 View
2002-06-07 ABST Abstract 1 View
2002-06-07 DRW Drawings-only black and white line drawings 6 View
2002-06-07 OATH Oath or Declaration filed 3 View
2002-06-07 LET. Miscellaneous Incoming Letter 1 View
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Quick Facts
Patent No.
US 6,637,866
App. No.
10/165,534
Filed
2002-06-07
Granted
2003-10-28
Art Unit
2853
PTA
-2 days