| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 49 | |
| #2 | France | 6 | |
| #3 | Switzerland | 4 | |
| #4 | Austria | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Installation of electric cables | |
| #2 | Pipes | |
| #3 | Lighting device details | |
| #4 | Electrically-conductive connections | |
| #5 | Non-portable lighting devices | |
| #6 | Nails | |
| #7 | Distribution of electric power |
| # | Name | Total Patents |
|---|---|---|
| #1 | Pleuger Erwin | 27 |
| #2 | Spelsberg Guenther | 16 |
| #3 | Spelsberg Guenther Dipl-Volksw | 7 |
| #4 | Spelsberg Dipl-Volksw Guenther | 4 |
| #5 | Winterhager Kurt | 3 |
| #6 | Kaiser Rolf | 2 |
| #7 | Spelsberg Guenter | 1 |
| #8 | Rudolf Kaiser | 1 |
| #9 | Hasso Freundner | 1 |
| #10 | Kaiser Rudolf | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE819424C | System of moisture-proof luminaires | |
| DE889777C | Junction box, especially for damp room lines | |
| DE715497C | Combination system for flush-mounted devices |