Granted Patent
Utility
US 4,474,371 · App. 06/337,871
Manipulative tile game
Inventor:
Marvin A. Silbermintz
Patented Case
View Patent ↗
Granted: Oct 2, 1984
Filed: Jan 7, 1982
Inventor
Marvin A. Silbermintz
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.