| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 2 | |
| #2 | France | 2 | |
| #3 | Canada | 1 | |
| #4 | Switzerland | 1 | |
| #5 | Germany | 1 | |
| #6 | Denmark | 1 | |
| #7 | EPO (European Patent Office) | 1 | |
| #8 | United Kingdom | 1 | |
| #9 | Italy | 1 | |
| #10 | Netherlands | 1 | |
| #11 | Sweden | 1 | |
| #12 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Control |
| # | Technology | |
|---|---|---|
| #1 | Coin-freed |
| # | Name | Total Patents |
|---|---|---|
| #1 | Koch Evaristo | 3 |
| #2 | Koch E | 2 |
| #3 | Schwizer Kilian | 2 |
| #4 | Schwizer K | 1 |
| #5 | Koch Evaristo Dipl Kfm | 1 |
| #6 | Schwizer Jr K | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EP0026745A2 | Coin operated locking device | |
| US4079823A | Coin-operated locking device | |
| GB1465124A | Coin operated locking device |