Granted Patent
Utility
US 5,138,337 · App. 07/521,511
Apparatus for grey level printing using a binary architectured printhead
Inventor:
Yee S. Ng
Patented Case
View Patent ↗
Granted: Aug 11, 1992
Filed: May 10, 1990
Inventor
Yee S. Ng
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.