The Counterfeit Coin Detector Patent Archive

Every device ever patented to catch a bad coin

Patented July 11, 1905

If an object in your hands says PAT. JULY 11, 1905, it may be one of these.

PatentTitleInventorOf
US 794,483COIN-DETECTOR FOR VENDING-MACHINES.Claude BigelowChicago, Illinois

All dates