Granted Patent
Utility
US 6,419,225 · App. 09/813,513
Slot-type gaming machine with variable drop zone symbols
Inventors:
Randy D. Sines, David A. Krise
Patented Case
View Patent ↗
Granted: Jul 16, 2002
Filed: Mar 20, 2001
Inventors
Randy D. Sines
David A. Krise
Assignee (at issue)
DigiDeal 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.