The Counterfeit Coin Detector Patent Archive

Every device ever patented to catch a bad coin

Patented June 6, 1933

If an object in your hands says PAT. JUNE 6, 1933, it may be one of these.

PatentTitleInventorOf
US 1,912,699SPURIOUS COIN DETECTORCharles A. FowlerSalt Lake City, Utah

All dates