Granted Patent
Utility
US 5,003,352 · App. 07/425,909
Liquid toner supply system and method
Inventors:
Mark F. Duchesne, George A. Gibson, Curtis Miller, Dinesh G. Punater, Paul V. Sadwick
Patented Case
View Patent ↗
Granted: Mar 26, 1991
Filed: Oct 24, 1989
Inventors
Mark F. Duchesne
George A. Gibson
Curtis Miller
Dinesh G. Punater
Paul V. Sadwick
Assignee (at issue)
AM 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.