Granted Patent
Utility
US 4,885,597 · App. 07/290,012
Non-impact printer apparatus with improved current mirror driver and method of printing
Inventors:
Pin S. Tschang, Hieu T. Pham, Kenneth D. Kieffer
Patented Case
View Patent ↗
Granted: Dec 5, 1989
Filed: Dec 27, 1988
Inventors
Pin S. Tschang
Hieu T. Pham
Kenneth D. Kieffer
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.