Check-actuated control mechanisms – Including means to test validity of check – By testing material composition
Patent
1984-06-05
1987-09-29
Bartuska, F. J.
Check-actuated control mechanisms
Including means to test validity of check
By testing material composition
194328, G07D 508
Patent
active
046963855
ABSTRACT:
Electronic coin or token detector apparatus is provided in accordance with the teachings of the present invention wherein a predetermined parameter of a coin under test is measured to determine genuineness and surface reflectivity is tested to insure a selected threshold level is present. The coin under test is treated as authentic only if both conditions are satisfied.
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patent: 4089400 (1978-05-01), Gregory
patent: 4286703 (1981-09-01), Schuller et al.
patent: 4354587 (1982-10-01), Davies
patent: 4385684 (1983-05-01), Sugimoto et al.
patent: 4483431 (1984-11-01), Pratt
patent: 4577744 (1986-03-01), Doucet
Bartuska F. J.
Digital Products Corporation
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