| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 3 |
| # | Industry | |
|---|---|---|
| #1 | Control |
| # | Technology | |
|---|---|---|
| #1 | Coin-freed | |
| #2 | Money sorting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Patzer William A | 11 |
| #2 | Tratsch Walter A | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2967452A | Currency testing and selecting device | |
| US2957387A | Test device for printed papers and elements of same | |
| US2942713A | Coin device | |
| US2839175A | Coin testing device | |
| US2745531A | Anti-cheating device coin operated machines | |
| US2763356A | Coin testing device | |
| US2763272A | Coin refunding mechanism | |
| US2805745A | Control device for operating members | |
| US2785828A | Dispensing machine | |
| CA559124A | Dispensing machine | |
| CA569588A | Coin testing device | |
| CA582003A | Anti-cheating device coin operated machine |