Granted Patent
Utility
US 6,398,354 · App. 09/345,281
Printhead apparatus and printer having separate filtration device and method for attaching said device
Inventors:
Michael David Lattuca, David A. Ward, Richard Corley, Carl Edmond Sullivan, Paul Timothy Spivey
Patented Case
View Patent ↗
Granted: Jun 4, 2002
Filed: Jun 30, 1999
Inventors
Michael David Lattuca
David A. Ward
Richard Corley
Carl Edmond Sullivan
Paul Timothy Spivey
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.