Granted Patent
Utility
US 5,450,105 · App. 08/056,326
Manual pen selection for clearing nozzles without removal from pen carriage
Inventor:
Michael Dangelo
Patented Case
View Patent ↗
Granted: Sep 12, 1995
Filed: Apr 30, 1993
Inventor
Michael Dangelo
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.