The Counterfeit Coin Detector Patent Archive

Every device ever patented to catch a bad coin

Patented June 3, 1879

If an object in your hands says PAT. JUNE 3, 1879, it may be one of these.

PatentTitleInventorOf
US 216,184IMPROVEMENT IN COMBINED SCALE AND COIN-TESTERGeorge HoagNew York, New York

All dates