Granted Patent
Utility
US 4,956,675 · App. 07/289,147
Ribbon blender for a development apparatus with self adjusting inner and outer ribbons
Inventor:
Brian Joseph
Patented Case
View Patent ↗
Granted: Sep 11, 1990
Filed: Dec 23, 1988
Inventor
Brian Joseph
Assignee (at issue)
EASTMAN KODAK COMPANY
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.