Granted Patent
Utility
US 5,375,829 · App. 08/021,223
Magnetic ball flipper for a rolling ball game
Inventors:
Patrick Lawlor, Lawrence E. DeMar, Ted Estes
Patented Case
View Patent ↗
Granted: Dec 27, 1994
Filed: Feb 23, 1993
Inventors
Patrick Lawlor
Lawrence E. DeMar
Ted Estes
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.