Granted Patent
Utility
US 5,667,250 · App. 08/289,708
Game ticket confusion patterns
Inventors:
William F. Behm, Mark Tevis, Bradley W. Walton, Stanley Litman
Patented Case
View Patent ↗
Granted: Sep 16, 1997
Filed: Aug 12, 1994
Inventors
William F. Behm
Mark Tevis
Bradley W. Walton
Stanley Litman
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.