Granted Patent
Utility
US 5,589,861 · App. 08/250,899
Cleaner cartridge for an inkjet printing mechanism
Inventor:
Alan Shibata
Patented Case
View Patent ↗
Granted: Dec 31, 1996
Filed: May 31, 1994
Inventor
Alan Shibata
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.