| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 56 | |
| #2 | United States | 3 | |
| #3 | United Kingdom | 2 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Audio-visual technology | |
| #3 | Measurement | |
| #4 | Basic communication technologies | |
| #5 | Computer technology | |
| #6 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Cameras | |
| #2 | Television | |
| #3 | Processing photographic materials | |
| #4 | Measuring electric variables | |
| #5 | Measuring speed and acceleration | |
| #6 | Amplifiers | |
| #7 | Goods for writing upon | |
| #8 | Analogue computers | |
| #9 | Advertising | |
| #10 | Special information storage |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rudolph Thun | 3 |
| #2 | Thun Rudolph | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US1934514A | Optical film-copying machine | |
| US1964834A | Photographic printing apparatus | |
| US2011737A | Apparatus for picture transmission |