Granted Patent
Utility
US 6,478,401 · App. 09/900,634
Method for determining vertical misalignment between printer print heads
Inventors:
David Golman King, Patrick Kroger
Patented Case
View Patent ↗
Granted: Nov 12, 2002
Filed: Jul 6, 2001
Inventors
David Golman King
Patrick Kroger
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.