Granted Patent
Utility
US 4,516,781 · App. 06/442,356
Dart game with two microcomputers
Inventors:
Donald P. DeVale, Robert J. Brejcha, Robert W. Van Naarden
Patented Case
View Patent ↗
Granted: May 14, 1985
Filed: Nov 17, 1982
Inventors
Donald P. DeVale
Robert J. Brejcha
Robert W. Van Naarden
Assignee (at issue)
Industrial Design Electronic Assoc., 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.