Granted Patent
Utility
US 6,137,502 · App. 09/384,803
Dual droplet size printhead
Inventors:
Frank Edward Anderson, John Philip Bolash, Robert W. Cornell, George Keith Parish
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: Aug 27, 1999
Inventors
Frank Edward Anderson
John Philip Bolash
Robert W. Cornell
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.