The Counterfeit Coin Detector Patent Archive

Every device ever patented to catch a bad coin

Patented October 8, 1895

If an object in your hands says PAT. OCTOBER 8, 1895, it may be one of these.

PatentTitleInventorOf
US 547,544COIN-INTRODUCING DEVICE FOR COIN-CONTROLLED VENDING-MACHINES.Willard H. GilmanBoston, Massachusetts

All dates