Granted Patent
Utility
US 6,712,439 · App. 10/321,038
Integrated circuit and drive scheme for an inkjet printhead
Inventors:
Frank Edward Anderson, George Keith Parish
Patented Case
View Patent ↗
Granted: Mar 30, 2004
Filed: Dec 17, 2002
Inventors
Frank Edward Anderson
George Keith Parish
Assignee (at issue)
Lexmark International, Inc.
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.