The Counterfeit Coin Detector Patent Archive

Every device ever patented to catch a bad coin

Patented July 23, 1935

If an object in your hands says PAT. JULY 23, 1935, it may be one of these.

PatentTitleInventorOf
US 2,008,764CHECK SELECTING APPARATUSRalph D. LynchLos Angeles, California

All dates