Granted Patent
Utility
US 4,875,057 · App. 07/239,564
Modular optical printhead for hard copy printers
Inventors:
Edwin A. Hediger, Yee S. Ng, Hieu T. Pham
Patented Case
View Patent ↗
Granted: Oct 17, 1989
Filed: Sep 1, 1988
Inventors
Edwin A. Hediger
Yee S. Ng
Hieu T. Pham
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.