Granted Patent
Utility
US 4,792,710 · App. 07/017,074
Construction of electrical machines
Inventor:
Stephen Williamson
Patented Case
View Patent ↗
Granted: Dec 20, 1988
Filed: Feb 20, 1987
Inventor
Stephen Williamson
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT 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.