John R. Ferguson

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Greenbrae, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Broadcast lottery
- Patent number 5,112,050
- Issue date May 12, 1992
- Koza; John R.
- John R. Koza
- G07 - CHECKING-DEVICES
Information Patent Grant
Ticket apparatus with a transmitter
- Patent number 5,069,453
- Issue date Dec 3, 1991
- Koza; John R.
- John R. Koza
- G07 - CHECKING-DEVICES