IP Library › Granted Patent US 6,701,721
Granted Patent Utility Small
US 6,701,721 · Confirmation No. 1983

STIRLING ENGINE DRIVEN HEAT PUMP WITH FLUID INTERCONNECTION

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2023-05-22 N572 Response - Re: Informal Power of Attorney (PTOL-308) 1 View
2023-05-04 PA.. Power of Attorney 3 View
2023-05-04 N417 Electronic Filing System Acknowledgment Receipt 2 View
2021-11-05 OATH Oath or Declaration filed 6 View
2015-03-11 IMIS Miscellaneous Internal Document 2 View
2004-01-20 IFEE Issue Fee Payment (PTO-85B) 3 View
2003-02-01 TRNA Transmittal of New Application 3 View
2003-02-01 SPEC Specification 39 View
2003-02-01 CLM Claims 9 View
2003-02-01 ABST Abstract 1 View
2003-02-01 DRW Drawings-only black and white line drawings 3 View
2003-02-01 OATH Oath or Declaration filed 6 View
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Quick Facts
Patent No.
US 6,701,721
App. No.
10/356,135
Filed
2003-02-01
Granted
2004-03-09
Art Unit
1636
PTA
0 days