Granted Patent
Utility
US 4,739,344 · App. 07/019,680
Chart recorded having multiple thermal print heads
Inventors:
Michael J. Sullivan, David M. Gaskill, Albert W. Ondis
Patented Case
View Patent ↗
Granted: Apr 19, 1988
Filed: Feb 27, 1987
Inventors
Michael J. Sullivan
David M. Gaskill
Albert W. Ondis
Assignee (at issue)
ASTRO-MED, 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.