| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 11 | |
| #2 | United Kingdom | 1 | |
| #3 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Special electric heating or lighting | |
| #2 | Electric switches | |
| #3 | Measuring temperature |
| # | Name | Total Patents |
|---|---|---|
| #1 | Naujoks Rudolf | 2 |
| #2 | Rudolf Naujoks | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1599912A | Electric cooking device | |
| GB229133A | Improvements in and relating to electric immersion heaters |