Granted Patent
Utility
US 4,820,073 · App. 07/153,344
Document cartridge
Inventors:
Kent Thomas, Daniel R. Bullis, Jr., Thomas J. Bottelson
Patented Case
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Granted: Apr 11, 1989
Filed: Feb 8, 1988
Inventors
Kent Thomas
Daniel R. Bullis, Jr.
Thomas J. Bottelson
Assignee (at issue)
TAB Products Company
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.