Granted Patent
Utility
US 6,213,873 · App. 09/073,409
User-adaptable computer chess system
Inventors:
Elon Gasper, Thomas M. Abbott, John G. Gilmore
Patented Case
View Patent ↗
Granted: Apr 10, 2001
Filed: May 5, 1998
Inventors
Elon Gasper
Thomas M. Abbott
John G. Gilmore
Assignee (at issue)
Sierra On-Line
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.