Granted Patent
Utility
US 5,803,504 · App. 08/795,285
Multicolor overprinting of scratch-off lottery tickets
Inventors:
Jean-Pierre Deshiens, Stephen John Holman
Patented Case
View Patent ↗
Granted: Sep 8, 1998
Filed: Feb 4, 1997
Inventors
Jean-Pierre Deshiens
Stephen John Holman
Assignee (at issue)
BABN Technologies Corporation
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.