The Counterfeit Coin Detector Patent Archive

Every device ever patented to catch a bad coin

Patented October 11, 1932

If an object in your hands says PAT. OCTOBER 11, 1932, it may be one of these.

PatentTitleInventorOf
US 1,882,503AUTOMATIC FRAUD PREVENTIVE MEANS FOR CHECK CONTROLLED APPARATUSAaron A. KneeCharlotte, North Carolina

All dates