Granted Patent
Utility
US 4,531,072 · App. 06/481,574
Shaded pole synchronous motor
Inventors:
Robert F. Weaver, Ted G. Proctor
Patented Case
View Patent ↗
Granted: Jul 23, 1985
Filed: Apr 1, 1983
Inventors
Robert F. Weaver
Ted G. Proctor
Assignee (at issue)
Emhart Industries, Inc.
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.