Registers – Calculators – Input-output calculator to indicator – printer – etc.
Patent
1974-07-10
1976-03-23
Cook, Daryl W.
Registers
Calculators
Input-output calculator to indicator, printer, etc.
235 617B, 271238, 340149A, 360 71, 235 6112R, G06K 706, B65H 906, G11B 1518, G06K 1908
Patent
active
039462048
ABSTRACT:
A card reader protecting device is provided which prevents any wrong card or foreign substance from being pushed thereinto by providing a material to be detected such as metal foil for indicating the authenticity of any normal card, and detecting adaptive signals produced by such a material, said device comprising a detection circuit for detecting said material, and a control circuit for controlling feed of said normal card to the card reader.
REFERENCES:
patent: 3403380 (1968-09-01), Welch
patent: 3457391 (1969-07-01), Yamamoto
patent: 3629556 (1971-12-01), Orzechowski
patent: 3644711 (1972-02-01), Haller
patent: 3821519 (1974-06-01), Pietenpol
patent: 3850426 (1974-11-01), Blair
Hosaka Iwao
Taniguchi Tadasu
Yoshida Shigeru
Canon Denshi Kabushiki Kaisha
Canon Kabushiki Kaisha
Cook Daryl W.
Kilgore Robert M.
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