Granted Patent
Utility
US 4,764,698 · App. 06/818,822
A.C. electric motors having a stator forming orthogonal magnetic paths
Inventor:
Koichi Murakami
Patented Case
View Patent ↗
Granted: Aug 16, 1988
Filed: Mar 24, 1986
Inventor
Koichi Murakami
Assignee (at issue)
Tohoku Metal Industries, 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.