Granted Patent
Utility
US 5,206,520 · App. 07/902,746
Imaging card device having an optical validation sensor
Inventor:
Andrew S. Filo
Patented Case
View Patent ↗
Granted: Apr 27, 1993
Filed: Jun 23, 1992
Inventor
Andrew S. Filo
Assignee (at issue)
Simon Marketing, 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.