Granted Patent
Utility
US 5,833,236 · App. 08/920,301
Wrecking ball play feature for a pinball game
Inventors:
Barry Oursler, Dwight Sullivan
Patented Case
View Patent ↗
Granted: Nov 10, 1998
Filed: Aug 28, 1997
Inventors
Barry Oursler
Dwight Sullivan
Assignee (at issue)
Williams Electronics Games, Inc.
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.