IP Library Granted Patent US 6,688,380
Granted Patent Utility
US 6,688,380 · Confirmation No. 3221

CORRUGATED FIN HEAT EXCHANGER AND METHOD OF MANUFACTURE

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Code Description Pages PDF
2012-09-10 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2012-09-10 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2012-09-06 PA.. Power of Attorney 2 View
2012-09-06 N417 Electronic Filing System Acknowledgment Receipt 2 View
2012-09-06 TRAN.LET Transmittal Letter 1 View
2012-09-06 R3.73 Assignee showing of ownership per 37 CFR 3.73 1 View
2003-09-24 IFEE Issue Fee Payment (PTO-85B) 1 View
2003-08-18 LET. Miscellaneous Incoming Letter 1 View
2003-08-18 DRW Drawings-only black and white line drawings 3 View
2003-08-06 CFILE Request for Corrected Filing Receipt 2 View
2002-06-28 TRNA Transmittal of New Application 5 View
2002-06-28 SPEC Specification 10 View
2002-06-28 CLM Claims 4 View
2002-06-28 ABST Abstract 1 View
2002-06-28 DRW Drawings-only black and white line drawings 3 View
2002-06-28 OATH Oath or Declaration filed 3 View
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Quick Facts
Patent No.
US 6,688,380
App. No.
10/185,652
Filed
2002-06-28
Granted
2004-02-10
Pub. No.
US20040000396A1
Art Unit
3743
PTA
-120 days