Granted Patent
Utility
US 5,092,398 · App. 07/709,102
Automotive parallel flow type heat exchanger
Inventors:
Kunihiko Nishishita, Takashi Sugita
Patented Case
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Granted: Mar 3, 1992
Filed: May 24, 1991
Inventors
Kunihiko Nishishita
Takashi Sugita
Assignee (at issue)
Zexel GmbH
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.