Granted Patent
Utility
US 4,288,781 · App. 06/060,090
Currency discriminator
Inventors:
Harvey R. Sellner, Robert T. Wada
Patented Case
View Patent ↗
Granted: Sep 8, 1981
Filed: Jul 24, 1979
Inventors
Harvey R. Sellner
Robert T. Wada
Assignee (at issue)
PerkinElmer, 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.