Granted Patent
Utility
US 4,783,970 · App. 07/022,285
Air conditioning system for vehicles
Inventor:
Tadahiro Takahashi
Patented Case
View Patent ↗
Granted: Nov 15, 1988
Filed: Mar 5, 1987
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.