Granted Patent
Utility
US 4,198,051 · App. 05/633,470
Computerized pin ball machine
Inventors:
Marion F. Bracha, William H. Englehardt
Patented Case
View Patent ↗
Granted: Apr 15, 1980
Filed: Nov 19, 1975
Inventors
Marion F. Bracha
William H. Englehardt
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.