| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 18 | |
| #2 | United Kingdom | 3 | |
| #3 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Dynamo-electric machines | |
| #2 | Electric motor controls | |
| #3 | Circuits for supplying electric power | |
| #4 | Gearing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hans Charlet | 2 |
| Publication | Filing date | Title |
|---|---|---|
| GB280624A | Improvements in or relating to dynamo electric machines | |
| GB268844A | Method of regulating a set of machines consisting of a water- or wind turbine and ofa continuous current machine | |
| US1462226A | Inherently-regulated direct-current dynamo | |
| US1416265A | Inherently-regulated direct-current dynamo | |
| GB172349A | Improvements in and relating to dynamo electric machines |