Granted Patent
Utility
US 5,680,167 · App. 07/817,022
Printing apparatus and method for tri-level color imaging
Inventor:
Roger Willis
Patented Case
View Patent ↗
Granted: Oct 21, 1997
Filed: Jan 3, 1992
Inventor
Roger Willis
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.