Granted Patent
Utility
US 4,591,874 · App. 06/722,553
Ink jet printing apparatus having improved home station diagnostic system
Inventor:
Michael J. Piatt
Patented Case
View Patent ↗
Granted: May 27, 1986
Filed: Apr 12, 1985
Inventor
Michael J. Piatt
Assignee (at issue)
EASTMAN KODAK COMPANY
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.