Granted Patent
Utility
US 5,518,070 · App. 08/547,728
Stacked tube type heat exchanger
Inventor:
Soichi Kato
Patented Case
View Patent ↗
Granted: May 21, 1996
Filed: Oct 26, 1995
Inventor
Soichi Kato
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.