Granted Patent
Utility
US 4,890,460 · App. 07/272,740
Air conditioning apparatus for car
Inventors:
Osawa Takasi, Katsumi Iida
Patented Case
View Patent ↗
Granted: Jan 2, 1990
Filed: Nov 17, 1988
Inventors
Osawa Takasi
Katsumi Iida
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.