Granted Patent
Utility
US 6,044,135 · App. 09/133,775
Telephone-interface lottery system
Inventor:
Ronald A. Katz
Patented Case
View Patent ↗
Granted: Mar 28, 2000
Filed: Aug 12, 1998
Inventor
Ronald A. Katz
Assignee (at issue)
Ronald A. Katz Technology Licensing, L.P.
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.