| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 33 | |
| #2 | Austria | 1 | |
| #3 | Switzerland | 1 | |
| #4 | United Kingdom | 1 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Telecommunications | |
| #3 | Basic communication technologies | |
| #4 | Measurement | |
| #5 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Loudspeakers and microphones | |
| #2 | Television | |
| #3 | Special information storage | |
| #4 | Measuring electric variables | |
| #5 | Broadcast communication | |
| #6 | Generation of oscillations | |
| #7 | Amplification control | |
| #8 | Waveguides | |
| #9 | General building constructions | |
| #10 | Antennas |
| # | Name | Total Patents |
|---|---|---|
| #1 | Peters Johannes | 5 |
| #2 | Below Fritz Dr | 3 |
| #3 | Knecht Rudolf | 2 |
| #4 | Thiessen Paul Dipl-Ing | 2 |
| #5 | Westphalen Kurt | 1 |
| #6 | Timmann Hans | 1 |
| #7 | Herbert Grosskopf | 1 |
| #8 | Belger Dipl-Phys Ernst | 1 |
| #9 | Cruel Dipl-Ing Rolf | 1 |
| #10 | Panceram Dipl-Phys Adolf | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE1030405B | Method for determining the number of participants in one or more radio programs using the pulse coincidence method | |
| DE1029060B | Selector switch for high frequency cables | |
| DE1030575B | Ferrite erase head for magnetic sound recorders | |
| DE865358C | Method and device for air conditioning rooms with a circulating air volume with a supply of fresh air | |
| US2678967A | Capacity microphone with variable directional characteristic | |
| GB689184A | Improvements in and relating to capacity microphones with variable directional characteristic |