Granted Patent
Utility
US 4,371,273 · App. 06/225,688
Electrochemical printhead
Inventors:
Arthur Harry Kendall, Joseph W. Mitchell, Carlos J. Sambucetti
Patented Case
View Patent ↗
Granted: Feb 1, 1983
Filed: Jan 16, 1981
Inventors
Arthur Harry Kendall
Joseph W. Mitchell
Carlos J. Sambucetti
Assignee (at issue)
International Business Machines 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.