Granted Patent
Utility
US 4,824,121 · App. 07/114,194
Dart game with programmable displays
Inventors:
Paul F. Beall, Eugene G. Harlan
Patented Case
View Patent ↗
Granted: Apr 25, 1989
Filed: Oct 28, 1987
Inventors
Paul F. Beall
Eugene G. Harlan
Assignee (at issue)
Arachnid, 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.