| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Sweden | 15 |
| # | Industry | |
|---|---|---|
| #1 | Telecommunications | |
| #2 | Electrical machinery and energy | |
| #3 | Control |
| # | Technology | |
|---|---|---|
| #1 | Telephonic communication | |
| #2 | Selecting | |
| #3 | Circuits for supplying electric power | |
| #4 | Transmission | |
| #5 | Systems for regulating electrical variables |
| # | Name | Total Patents |
|---|---|---|
| #1 | Trok B | 15 |
| #2 | Cogne U | 5 |
| #3 | Torneklint L | 4 |
| #4 | Eklov D | 1 |
| #5 | Svedberg K | 1 |
| #6 | Soederbom A | 1 |