Granted Patent
Utility
US 4,241,920 · App. 06/088,173
Amusement apparatus
Inventor:
Donald E. Hooker
Patented Case
View Patent ↗
Granted: Dec 30, 1980
Filed: Oct 25, 1979
Inventor
Donald E. Hooker
Assignee (at issue)
Bally Manufacturing 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.