Granted Patent
Utility
US 5,605,191 · App. 08/589,006
Heat exchanger
Inventors:
Yoshihisa Eto, Toshio Tsubakida, Takashi Sugita
Patented Case
View Patent ↗
Granted: Feb 25, 1997
Filed: Jan 19, 1996
Inventors
Yoshihisa Eto
Toshio Tsubakida
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.