Granted Patent
Utility
US 6,474,764 · App. 09/683,024
Control circuit for driving a print head of a printing apparatus
Inventors:
Chih-Hung Kao, Yu-Fan Fang
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Nov 9, 2001
Inventors
Chih-Hung Kao
Yu-Fan Fang
Assignee (at issue)
BenQ Corporation
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.