Patented April 29, 1952
If an object in your hands says PAT. APRIL 29, 1952, it may be one of these.
| Patent | Title | Inventor | Of |
|---|---|---|---|
| US 2,594,424 | COIN CONTROLLED OSCILLATOR FOR RELAY OPERATION | Alexander M. Gordon | Providence, Rhode Island |
The Counterfeit Coin Detector Patent Archive
Every device ever patented to catch a bad coin
If an object in your hands says PAT. APRIL 29, 1952, it may be one of these.
| Patent | Title | Inventor | Of |
|---|---|---|---|
| US 2,594,424 | COIN CONTROLLED OSCILLATOR FOR RELAY OPERATION | Alexander M. Gordon | Providence, Rhode Island |