The Counterfeit Coin Detector Patent Archive

Every device ever patented to catch a bad coin

Patented July 8, 1862

If an object in your hands says PAT. JULY 8, 1862, it may be one of these.

PatentTitleInventorOf
US 35,834IMPROVEMENT IN COUNTERFEIT-COIN DETECTORS.William PainterFallston, Maryland

All dates