Granted Patent
Utility
US 4,354,680 · App. 06/201,756
Pinball game including elevated ball pathway
Inventor:
Gregory E. Kmiec
Patented Case
View Patent ↗
Granted: Oct 19, 1982
Filed: Oct 29, 1980
Inventor
Gregory E. Kmiec
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.