Granted Patent
Utility
US 5,646,654 · App. 08/401,393
Ink-jet printing system having acoustic transducer for determining optimum operating energy
Inventor:
John A. Widder
Patented Case
View Patent ↗
Granted: Jul 8, 1997
Filed: Mar 9, 1995
Inventor
John A. Widder
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.