The Counterfeit Coin Detector Patent Archive

Every device ever patented to catch a bad coin

Patented October 16, 1934

If an object in your hands says PAT. OCTOBER 16, 1934, it may be one of these.

PatentTitleInventorOf
US 1,977,326FRAUD PREVENTATIVE DEVICE FOR SLOT MACHINESGust PoulasCleveland, Ohio

All dates