Granted Patent
Utility
US 6,696,212 · App. 09/818,253
Single component toner for improved magnetic image character recognition
Inventors:
Dana G. Marsh, John F. Crichton, David D. Putnam, Robert E. Contois
Patented Case
View Patent ↗
Granted: Feb 24, 2004
Filed: Mar 27, 2001
Inventors
Dana G. Marsh
John F. Crichton
David D. Putnam
Robert E. Contois
Assignee (at issue)
Heidelberger Druckmaschinen AG
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.