Granted Patent
Utility
US 4,809,517 · App. 07/037,515
Blower controlling device for automobile air-conditioning system
Inventor:
Choshichi Miyanaga
Patented Case
View Patent ↗
Granted: Mar 7, 1989
Filed: Apr 13, 1987
Inventor
Choshichi Miyanaga
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.