Granted Patent
Utility
US 4,290,358 · App. 06/111,442
Print head
Inventor:
Paul H. Hamisch, Jr.
Patented Case
View Patent ↗
Granted: Sep 22, 1981
Filed: Jan 11, 1980
Inventor
Paul H. Hamisch, Jr.
Assignee (at issue)
Monarch Marking Systems, Inc.
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.