| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 23 | |
| #2 | Austria | 3 | |
| #3 | France | 2 | |
| #4 | United Kingdom | 2 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Audio-visual technology | |
| #3 | Electrical machinery and energy | |
| #4 | Telecommunications | |
| #5 | Basic communication technologies |
| # | Technology | |
|---|---|---|
| #1 | Measuring electric variables | |
| #2 | Electromechanical clocks | |
| #3 | Electric switches | |
| #4 | Casings and printed circuits | |
| #5 | Special measuring | |
| #6 | Transmission | |
| #7 | Tuning resonant circuits | |
| #8 | Display controls | |
| #9 | Advertising |
| Publication | Filing date | Title |
|---|---|---|
| GB316439A | Electrical distant-indicating plant and a method of adjustment thereof | |
| GB302396A | Improvements in or relating to electrical signalling or control systems |