Granted Patent
Utility
US 6,438,840 · App. 09/870,360
Method of making continuous corrugated heat exchanger
Inventors:
Joseph TAVI, James Harvey Hornsby, IV, Daniel Paul Massman
Patented Case
View Patent ↗
Granted: Aug 27, 2002
Filed: May 30, 2001
Inventors
Joseph TAVI
James Harvey Hornsby, IV
Daniel Paul Massman
Assignee (at issue)
Visteon Global Technologies, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.