Granted Patent
Utility
US 5,553,664 · App. 08/243,769
Laminated heat exchanger
Inventors:
Kunihiko Nishishita, Takashi Kinugawa
Patented Case
View Patent ↗
Granted: Sep 10, 1996
Filed: May 17, 1994
Inventors
Kunihiko Nishishita
Takashi Kinugawa
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.