Granted Patent
Utility
US 6,203,009 · App. 09/128,960
Slot-type gaming machine with variable drop zone symbols
Inventors:
Randy D. Sines, David A. Krise
Patented Case
View Patent ↗
Granted: Mar 20, 2001
Filed: Aug 4, 1998
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.