| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 19 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Electrical machinery and energy | |
| #3 | Basic communication technologies | |
| #4 | Optics | |
| #5 | Telecommunications | |
| #6 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Special information storage | |
| #2 | Cameras | |
| #3 | Electric discharge tubes | |
| #4 | Modulation | |
| #5 | Stereophonic systems | |
| #6 | Electrophonic musical instruments | |
| #7 | Demodulation | |
| #8 | Loudspeakers and microphones | |
| #9 | AC and DC conversion devices | |
| #10 | Transmission |
| # | Name | Total Patents |
|---|---|---|
| #1 | Mayer Dipl-Ing Josef | 1 |