Granted Patent
Utility
US 4,378,582 · App. 06/332,820
Demagnetizing apparatus
Inventors:
Bruce R. Maier, Bruce A. Hutchins, Richard Fay
Patented Case
View Patent ↗
Granted: Mar 29, 1983
Filed: Dec 21, 1981
Inventors
Bruce R. Maier
Bruce A. Hutchins
Richard Fay
Assignee (at issue)
International Jensen Incorporated
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.