Granted Patent
Utility
US 4,683,392 · App. 06/371,900
Eddy current coupling having stepped rotor and coil support
Inventors:
Daniel J. MacDonald, Thomas H. Jones
Patented Case
View Patent ↗
Granted: Jul 28, 1987
Filed: Apr 26, 1982
Inventors
Daniel J. MacDonald
Thomas H. Jones
Assignee (at issue)
Magnetek, 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.