| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 18 | |
| #2 | Germany | 7 | |
| #3 | Canada | 1 | |
| #4 | Denmark | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Audio-visual technology | |
| #3 | Machines | |
| #4 | Telecommunications |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sten Daniel Vigren | 18 |
| #2 | Rolf Albin Zander | 13 |
| #3 | Otto Wilhelm Broberg Walter | 11 |
| #4 | Vigren Sten Daniel | 8 |
| #5 | Harry Elias Claesson Per | 4 |
| #6 | Zander Rolf Albin | 3 |
| #7 | Olsson Oscar Karl Johan | 2 |
| #8 | Karl Johan Olsson Oscar | 2 |
| #9 | Elias Claesson Per Harry | 1 |
| #10 | Albin Zander Rolf | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA367291A | Telephone, telegraph and signal system |