The Counterfeit Coin Detector Patent Archive

Every device ever patented to catch a bad coin

Patented February 28, 1933

If an object in your hands says PAT. FEBRUARY 28, 1933, it may be one of these.

PatentTitleInventorOf
US 1,899,560SPURIOUS COIN SEPARATOREdward P. DonnellanBrooklyn, New York

All dates