Granted Patent
Utility
US 6,292,579 · App. 09/020,933
Document validator having an inductive sensor
Inventor:
Derek Hutchinson
Patented Case
View Patent ↗
Granted: Sep 18, 2001
Filed: Feb 9, 1998
Inventor
Derek Hutchinson
Assignee (at issue)
Mars, Incorporated
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.