Granted Patent
Utility
US 4,245,225 · App. 05/958,916
Ink jet head
Inventors:
Gary L. Fillmore, Arthur R. Hoffman, Thomas Young
Patented Case
View Patent ↗
Granted: Jan 13, 1981
Filed: Nov 8, 1978
Inventors
Gary L. Fillmore
Arthur R. Hoffman
Thomas Young
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.