| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 4 | |
| #2 | United Kingdom | 2 | |
| #3 | Italy | 2 | |
| #4 | Belgium | 1 | |
| #5 | Denmark | 1 | |
| #6 | Netherlands | 1 | |
| #7 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Electric motor controls | |
| #2 | Dynamo-electric machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Schade W | 6 |
| Publication | Filing date | Title |
|---|---|---|
| GB1364679A | Direct current electrical machines |