Granted Patent
Utility
US 4,856,291 · App. 07/289,839
Air conditioning system for automotive vehicles
Inventor:
Tadahiro Takahashi
Patented Case
View Patent ↗
Granted: Aug 15, 1989
Filed: Dec 27, 1988
Inventor
Tadahiro Takahashi
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.