Granted Patent
Utility
US 6,771,922 · App. 10/335,340
Toner cartridge
Inventors:
Thomas Wilbur Blanck, Mark Duane Foster, Robert Watson McAlpine, Gregory Scott Tigges
Patented Case
View Patent ↗
Granted: Aug 3, 2004
Filed: Dec 31, 2002
Inventors
Thomas Wilbur Blanck
Mark Duane Foster
Robert Watson McAlpine
Gregory Scott Tigges
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.