| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 2 | |
| #2 | Denmark | 2 | |
| #3 | Norway | 2 | |
| #4 | Australia | 1 | |
| #5 | Canada | 1 | |
| #6 | EPO (European Patent Office) | 1 | |
| #7 | Republic of Korea | 1 | |
| #8 | New Zealand | 1 | |
| #9 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Loudspeakers and microphones |
| # | Name | Total Patents |
|---|---|---|
| #1 | Schupbach Walter | 10 |
| #2 | Walter Schupbach | 1 |
| #3 | Schupbach W | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CH667174A5 | Monolithic stereophonic speaker. | |
| CH663872A5 | Stereophonic speaker. |