Granted Patent
Utility
US 4,238,729 · App. 06/012,915
Magnetic damping system having low induction magnet
Inventors:
John A. MacFadden, Joseph M. Keever
Patented Case
View Patent ↗
Granted: Dec 9, 1980
Filed: Feb 16, 1979
Inventors
John A. MacFadden
Joseph M. Keever
Assignee (at issue)
Westinghouse Electric Company LLC
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.