| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 7 | |
| #2 | United Kingdom | 2 | |
| #3 | Germany | 1 | |
| #4 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Basic communication technologies | |
| #2 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Tuning resonant circuits | |
| #2 | Amplifiers | |
| #3 | Measuring mechanical vibrations |
| # | Name | Total Patents |
|---|---|---|
| #1 | Baumgartner Heinrich | 2 |
| Publication | Filing date | Title |
|---|---|---|
| DE950563C | Radio receiver with optical tuning display | |
| GB475379A | Improvements in and relating to pointer tuning indicators for wireless receiving sets |