Granted Patent
Utility
US 4,470,089 · App. 06/332,822
Tape unit cleaning device
Inventors:
Bruce A. Hutchins, Richard Fay
Patented Case
View Patent ↗
Granted: Sep 4, 1984
Filed: Dec 21, 1981
Inventors
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.