Granted Patent
Utility
US 6,612,680 · App. 10/185,954
Method of imaging substance depletion detection for an imaging device
Inventors:
David Golman King, Patrick Kroger
Patented Case
View Patent ↗
Granted: Sep 2, 2003
Filed: Jun 28, 2002
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.