| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 3 | |
| #2 | Austria | 2 | |
| #3 | Belgium | 2 | |
| #4 | Brazil | 2 | |
| #5 | Sweden | 2 | |
| #6 | African Intellectual Property Organization | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Electrically-conductive connections | |
| #2 | Cables and insulators | |
| #3 | Electric switches | |
| #4 | Dynamo-electric machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Schreiber J | 4 |
| #2 | Foerste W | 3 |
| #3 | Ostermay G | 2 |
| #4 | Forste W | 2 |
| #5 | Mehrwald K-H | 2 |
| #6 | Teuschler H-J | 2 |
| #7 | Kochert H | 2 |
| #8 | Mehrswald K | 1 |
| #9 | Tenschiler H | 1 |
| #10 | Teuschler H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1333165A | Slip ring assembly for electric machines | |
| OA03660A | Friction and sliding contact for electrical engineering. | |
| GB1307628A | Slip ring assembly for electrical machines | |
| BE753199A | Electrical brushes | |
| GB1311994A | Movable contacts for electrical apparatus |