Granted Patent
Utility
US 4,673,304 · App. 06/765,077
Thermal printer ribbon cartridge for wide ribbons
Inventors:
Dean-Yuan Liu, Albert A. Sholtis
Patented Case
View Patent ↗
Granted: Jun 16, 1987
Filed: Aug 13, 1985
Inventors
Dean-Yuan Liu
Albert A. Sholtis
Assignee (at issue)
Sanders GmbH
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.