The Counterfeit Coin Detector Patent Archive

Every device ever patented to catch a bad coin

Patented January 9, 1940

If an object in your hands says PAT. JANUARY 9, 1940, it may be one of these.

PatentTitleInventorOf
US 2,186,863COIN SELECTORJohn Gottfried and Benjamin W. FrySt. Louis, Missouri

All dates