Granted Patent
Utility
US 4,589,265 · App. 06/669,400
Heat exchanger for an air conditioning system evaporator
Inventor:
Kazuo Nozawa
Patented Case
View Patent ↗
Granted: May 20, 1986
Filed: Nov 8, 1984
Inventor
Kazuo Nozawa
Assignee (at issue)
Diesel Kiki Co., Ltd.
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.