Granted Patent
Utility
US 5,113,488 · App. 07/617,747
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Inventors:
Patrick O. Bischel, John Knox Brown, III, Carl P. Cole, Donald G. Fitch
Patented Case
View Patent ↗
Granted: May 12, 1992
Filed: Nov 26, 1990
Inventors
Patrick O. Bischel
John Knox Brown, III
Carl P. Cole
Donald G. Fitch
Assignee (at issue)
Lexmark International, Inc.
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.