Granted Patent
Utility
US 6,820,959 · App. 09/089,698
Ink jet cartridge structure
Inventors:
Donald Norman Spitz, Carl Edmond Sullivan, David A. Ward, Benjamin Alan Askren, Michael David Lattuca, Ashok Murthy, Ronald M. Nowell, Jr., Darrin Wayne Oliver
Patented Case
View Patent ↗
Granted: Nov 23, 2004
Filed: Jun 3, 1998
Inventors
Donald Norman Spitz
Carl Edmond Sullivan
David A. Ward
Benjamin Alan Askren
Michael David Lattuca
Ashok Murthy
Ronald M. Nowell, Jr.
Darrin Wayne Oliver
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.