The Counterfeit Coin Detector Patent Archive

Every device ever patented to catch a bad coin

Patented February 7, 1933

If an object in your hands says PAT. FEBRUARY 7, 1933, it may be one of these.

PatentTitleInventorOf
US 1,896,392SPURIOUS COIN DETECTOR AND EJECTOREmil de RyssScarsdale, New York

All dates