Granted Patent
Utility
US 4,598,220 · App. 06/640,979
End play and lubricating system for fractional horsepower electric motors
Inventor:
Thomas W. Stone
Patented Case
View Patent ↗
Granted: Jul 1, 1986
Filed: Aug 15, 1984
Inventor
Thomas W. Stone
Assignee (at issue)
Universal Electric Corporation
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.