| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 14 | |
| #2 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Dynamo-electric machines | |
| #2 | AC and DC conversion devices | |
| #3 | Magnets and transformers | |
| #4 | Vehicle air-treating devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Tellert Fritz | 11 |
| Publication | Filing date | Title |
|---|---|---|
| DE1111652B | Vehicle refrigeration machine | |
| GB523934A | Improvements in dynamo-electric machines |