Granted Patent
Utility
US 6,580,888 · App. 09/859,909
Contact development system reference structure
Inventors:
Paul Douglas Horrall, Franklin Joseph Palumbo
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: May 17, 2001
Inventors
Paul Douglas Horrall
Franklin Joseph Palumbo
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.