Granted Patent
Utility
US 4,719,477 · App. 06/820,754
Integrated thermal ink jet printhead and method of manufacture
Inventor:
Ulrich Hess
Patented Case
View Patent ↗
Granted: Jan 12, 1988
Filed: Jan 17, 1986
Inventor
Ulrich Hess
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.