Granted Patent
Utility
US 5,434,603 · App. 07/995,108
Ink cartridge with passageway for ink level indicator
Inventor:
David S. Hunt
Patented Case
View Patent ↗
Granted: Jul 18, 1995
Filed: Dec 22, 1992
Inventor
David S. Hunt
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.