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John R. Ferguson
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Greenbrae, CA, US
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last 30 patents
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Patent Grant
Broadcast lottery
Patent number
5,112,050
Issue date
May 12, 1992
Koza; John R.
John R. Koza
G07 - CHECKING-DEVICES
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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