| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 17 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Audio-visual technology | |
| #3 | Optics |
| # | Technology | |
|---|---|---|
| #1 | Electric discharge tubes | |
| #2 | Special information storage | |
| #3 | Photosensitive materials | |
| #4 | Electric switches | |
| #5 | Special electric heating or lighting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Joseph Engl Dr | 1 |
| #2 | Vogt Hans | 1 |
| #3 | Joseph Massolle | 1 |