Granted Patent
Utility
US 5,806,651 · App. 08/770,180
Coin discrimination system
Inventors:
Ralph H. Carmen, Joseph H. Sutton, Daniel P. Kasuba
Patented Case
View Patent ↗
Granted: Sep 15, 1998
Filed: Dec 19, 1996
Inventors
Ralph H. Carmen
Joseph H. Sutton
Daniel P. Kasuba
Assignee (at issue)
Duncan Industries Parking Control Systems
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.