Patented April 30, 1878
If an object in your hands says PAT. APRIL 30, 1878, it may be one of these.
| Patent | Title | Inventor | Of |
|---|---|---|---|
| US 203,057 | IMPROVEMENT IN POSTAL-SCALE AND COUNTERFEIT-COIN DETECTER. | Harvey Maranville | Akron, Ohio |
The Counterfeit Coin Detector Patent Archive
Every device ever patented to catch a bad coin
If an object in your hands says PAT. APRIL 30, 1878, it may be one of these.
| Patent | Title | Inventor | Of |
|---|---|---|---|
| US 203,057 | IMPROVEMENT IN POSTAL-SCALE AND COUNTERFEIT-COIN DETECTER. | Harvey Maranville | Akron, Ohio |