Granted Patent
Utility
US 6,168,523 · App. 09/114,585
Bonus award feature in a gaming machine
Inventors:
Robert J. Piechowiak, Curtis J. Crawford
Patented Case
View Patent ↗
Granted: Jan 2, 2001
Filed: Jul 13, 1998
Inventors
Robert J. Piechowiak
Curtis J. Crawford
Assignee (at issue)
Sigma Game, 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.