Granted Patent
Utility
US 5,718,285 · App. 08/596,404
Heat exchanger and method for manufacturing heat exchangers
Inventors:
Rei Oikawa, Yukihiro Fukada
Patented Case
View Patent ↗
Granted: Feb 17, 1998
Filed: Feb 2, 1996
Inventors
Rei Oikawa
Yukihiro Fukada
Assignee (at issue)
SANDEN CORPORATION
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.