Granted Patent
Utility
US 5,196,681 · App. 07/441,668
Magnetic ink medium and corresponding reading unit, and method for using same
Inventor:
Antonio Mantegazza
Patented Case
View Patent ↗
Granted: Mar 23, 1993
Filed: Nov 27, 1989
Inventor
Antonio Mantegazza
Assignee (at issue)
Mantegazza Antonio Arti Grafiche S.r.l.
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.