Granted Patent
Utility
US 4,299,637 · App. 05/915,382
Method of making a game ticket
Inventors:
Martin K. Oberdeck, John R. Koza
Patented Case
View Patent ↗
Granted: Nov 10, 1981
Filed: Jun 14, 1978
Inventors
Martin K. Oberdeck
John R. Koza
Assignee (at issue)
John R. Koza
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.