The Counterfeit Coin Detector Patent Archive

Every device ever patented to catch a bad coin

Patented April 3, 1934

If an object in your hands says PAT. APRIL 3, 1934, it may be one of these.

PatentTitleInventorOf
US 1,953,414SHADED POLE ELECTRIC COIN SELECTORWalter Karl KloseLincoln, Nebraska

All dates