| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 4 | |
| #2 | United Kingdom | 3 | |
| #3 | Germany | 2 | |
| #4 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Basic communication technologies | |
| #2 | Semiconductors | |
| #3 | Electrical machinery and energy | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Tuning resonant circuits | |
| #2 | Semiconductor devices | |
| #3 | Unspecified technologies | |
| #4 | Resistors | |
| #5 | Capacitors and switching devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bonnefont Antoine | 3 |
| #2 | Antoine Bonnefont | 2 |
| Publication | Filing date | Title |
|---|---|---|
| GB276308A | Improvements in speed-reducing devices for control with automatic two speed reduction, more particularly applicable to radio apparatus (condensers, variometers, and the like) | |
| US1715736A | Radio instrument controlling device | |
| GB157778A | Crystal detector for wireless telegraphy | |
| US1410793A | Crystal detector for wireless telegraphy |