Granted Patent
Utility
US 5,419,592 · App. 08/070,188
Bingo-game marker with revealable, concealed imprint
Inventor:
Kenneth Stuart
Patented Case
View Patent ↗
Granted: May 30, 1995
Filed: Jun 2, 1993
Inventor
Kenneth Stuart
Assignee (at issue)
Stuart Entertainment
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.