| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 7 | |
| #2 | France | 7 | |
| #3 | Germany | 3 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Transport |
| # | Name | Total Patents |
|---|---|---|
| #1 | Joseph Belli Charles | 7 |
| #2 | Secheron Ste Ame Des Ateliers | 6 |
| #3 | Belli Charles Joseph | 6 |
| #4 | Belli Charles-Joseph | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB178421A | Improvements in couplings for machines of the high voltage direct current series system | |
| DE384974C | Above-ground line for power transmission with high voltage direct current | |
| DE441425C | Spring-loaded and electrically isolating coupling |