Granted Patent
Utility
US 5,186,239 · App. 07/829,115
Heat exchanger with thermal stress relieving zone
Inventors:
Darryl Leigh Young, Josef Hirmann, Eugene E. Rhodes, David L. Brightwell
Patented Case
View Patent ↗
Granted: Feb 16, 1993
Filed: Jan 30, 1992
Inventors
Darryl Leigh Young
Josef Hirmann
Eugene E. Rhodes
David L. Brightwell
Assignee (at issue)
Ford Motor Company
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.