Granted Patent
Utility
US 6,722,147 · App. 10/223,268
Coolant circuit of a motor vehicle having a coolant/refrigerant heat exchanger
Inventors:
Peter Heyl, Jörn Fröhling
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: Aug 19, 2002
Inventors
Peter Heyl
Jörn Fröhling
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.