The Counterfeit Coin Detector Patent Archive

Every device ever patented to catch a bad coin

Patented October 12, 1926

If an object in your hands says PAT. OCTOBER 12, 1926, it may be one of these.

PatentTitleInventorOf
US 1,602,487SLUG-DETECTING DEVICE FOR COIN-CONTROLLED MACHINES.Frank Hedley and James S. DoyleYonkers, New York

All dates