Granted Patent
Utility
US 4,376,476 · App. 06/229,716
Driving circuit for magnetic clutches for use with refrigerant compressors
Inventor:
Tiichi Hagiri
Patented Case
View Patent ↗
Granted: Mar 15, 1983
Filed: Jan 29, 1981
Inventor
Tiichi Hagiri
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.