Granted Patent
Utility
US 5,797,184 · App. 08/454,668
Method of making a heat exchanger
Inventors:
Hiroshi Tanaka, Kazuki Hosoya
Patented Case
View Patent ↗
Granted: Aug 25, 1998
Filed: May 31, 1995
Inventors
Hiroshi Tanaka
Kazuki Hosoya
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.