Granted Patent
Utility
US 4,452,480 · App. 06/332,821
Record handling device
Inventors:
Bruce R. Maier, Jon M. Risch
Patented Case
View Patent ↗
Granted: Jun 5, 1984
Filed: Dec 21, 1981
Inventors
Bruce R. Maier
Jon M. Risch
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.