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The Counterfeit Coin Detector Patent Archive

Every device ever patented to catch a bad coin

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1950s coin mechanism

Patent drawing of a coin machine slug ejector showing front and rear views of a boxy mechanism with a pivoted coin chute, horseshoe magnet, solenoid, and switch blades, plus detailed sectional views labeled FIG.1 through FIG.7 with numbered parts and an inventor's signature.

COIN MACHINE SLUG EJECTORJules A. Fremon · April 8, 1958

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