| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 1 | |
| #2 | Australia | 1 | |
| #3 | Belgium | 1 | |
| #4 | Switzerland | 1 | |
| #5 | Germany | 1 | |
| #6 | Denmark | 1 | |
| #7 | EPO (European Patent Office) | 1 | |
| #8 | Spain | 1 | |
| #9 | Finland | 1 | |
| #10 | Hong Kong | 1 | |
| #11 | Ireland | 1 | |
| #12 | Italy | 1 | |
| #13 | Japan | 1 | |
| #14 | Netherlands | 1 | |
| #15 | Norway | 1 | |
| #16 | Portugal | 1 | |
| #17 | Sweden | 1 | |
| #18 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Electrophonic musical instruments | |
| #2 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Cohn James Myron | 9 |
| #2 | Cohn J M | 1 |
| #3 | Jieemuzu Mairon Koon | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EP0065587A1 | Electrical control device using a potentiometer | |
| AU2822477A | Electric control device | |
| US4052923A | Electrical control devices |