IP Library Granted Patent US 6,438,840
Granted Patent Utility
US 6,438,840 · Confirmation No. 8336

METHOD OF MAKING CONTINUOUS CORRUGATED HEAT EXCHANGE

⬇ PDF
Code Description Pages PDF
2001-05-30 TRNA Transmittal of New Application 3 View
2001-05-30 SPEC Specification 10 View
2001-05-30 CLM Claims 3 View
2001-05-30 ABST Abstract 1 View
2001-05-30 DRW Drawings-only black and white line drawings 2 View
2001-05-30 OATH Oath or Declaration filed 2 View
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Quick Facts
Patent No.
US 6,438,840
App. No.
09/870,360
Filed
2001-05-30
Granted
2002-08-27
Pub. No.
US20010037572A1
Art Unit
3726
PTA
-8 days