| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 55 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Basic communication technologies | |
| #3 | Measurement | |
| #4 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Electric discharge tubes | |
| #2 | Measuring electric variables | |
| #3 | Television | |
| #4 | Pulse technique | |
| #5 | Radio navigation | |
| #6 | Resonators | |
| #7 | Generation of oscillations | |
| #8 | Dynamo-electric machines | |
| #9 | Magnets and transformers | |
| #10 | Casings and printed circuits |
| # | Name | Total Patents |
|---|---|---|
| #1 | Heckmann H | 1 |
| #2 | Wolf Hellmut | 1 |