| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 15 | |
| #2 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Basic communication technologies | |
| #3 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Electric discharge tubes | |
| #2 | Magnets and transformers | |
| #3 | Amplification control | |
| #4 | Tuning resonant circuits | |
| #5 | Casings and printed circuits | |
| #6 | Amplifiers | |
| #7 | Electric switches | |
| #8 | Electrically-conductive connections | |
| #9 | Resonators | |
| #10 | Demodulation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nissen Georges | 7 |
| #2 | Nissen | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB842151A | Improvements in or relating to turret tuners and coil formers therefor |