Granted Patent
Utility
US 4,940,348 · App. 07/244,366
Platen controlled sheetfeed permitting back-up for erasure
Inventors:
Albert L. Akers, Robert M. Carpenter, William D. Freeman, John E. Passafiume
Patented Case
View Patent ↗
Granted: Jul 10, 1990
Filed: Sep 15, 1988
Inventors
Albert L. Akers
Robert M. Carpenter
William D. Freeman
John E. Passafiume
Assignee (at issue)
International Business Machines Corporation
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.