Granted Patent
Utility
US 5,997,121 · App. 08/572,595
Sensing system for detecting presence of an ink container and level of ink therein
Inventors:
Kenneth W. Altfather, Michael Carlotta, Steven J. Dietl, Donald M. Stevens, Fred F. Hubble, III
Patented Case
View Patent ↗
Granted: Dec 7, 1999
Filed: Dec 14, 1995
Inventors
Kenneth W. Altfather
Michael Carlotta
Steven J. Dietl
Donald M. Stevens
Fred F. Hubble, III
Assignee (at issue)
Xerox 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.