IP Library Granted Patent US 6,761,212
Granted Patent Utility
US 6,761,212 · Confirmation No. 5558

SPIRAL COPPER TUBE AND ALUMINUM FIN THERMOSYPHON HEAT EXCHANGER

Inventor: Frank E. DiPaolo
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Code Description Pages PDF
2004-02-04 IFEE Issue Fee Payment (PTO-85B) 1 View
2004-02-04 LET. Miscellaneous Incoming Letter 6 View
2004-02-04 DRW Drawings-only black and white line drawings 4 View
2001-05-25 TRNA Transmittal of New Application 2 View
2001-05-25 SPEC Specification 9 View
2001-05-25 CLM Claims 4 View
2001-05-25 ABST Abstract 1 View
2001-05-25 DRW Drawings-only black and white line drawings 3 View
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Quick Facts
Patent No.
US 6,761,212
App. No.
09/866,370
Filed
2001-05-25
Granted
2004-07-13
Pub. No.
US20020014324A1
Art Unit
3743
PTA
-126 days