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App. No. 10/374,890 · Confirmation No. 2607

HEAT EXCHANGER TUBING AND HEAT EXCHANGER ASSEMBLY USING SAID TUBING

Inventor: Baolute Ren
Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362 View Patent ↗
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 Code Description Pages PDF
2004-04-19 IFEE Issue Fee Payment (PTO-85B) 2 View
2004-02-26 LET. Miscellaneous Incoming Letter 1 View
2004-02-26 DRW Drawings-only black and white line drawings 3 View
2003-02-25 TRNA Transmittal of New Application 2 View
2003-02-25 SPEC Specification 9 View
2003-02-25 CLM Claims 3 View
2003-02-25 ABST Abstract 1 View
2003-02-25 DRW Drawings-only black and white line drawings 4 View
2003-02-25 OATH Oath or Declaration filed 2 View
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Quick Facts
App. No.
10/374,890
Filed
2003-02-25
Granted
2004-05-25
Art Unit
3743
PTA
-90 days