| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 20 | |
| #2 | United Kingdom | 5 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Transport | |
| #3 | Telecommunications | |
| #4 | Electrical machinery and energy | |
| #5 | Mechanical elements | |
| #6 | Measurement | |
| #7 | Basic communication technologies |
| # | Technology | |
|---|---|---|
| #1 | Supplying combustion engines | |
| #2 | Transmission | |
| #3 | Gearing | |
| #4 | Vehicle suspension arrangements | |
| #5 | Motor vehicles | |
| #6 | Electric discharge tubes | |
| #7 | Measuring volume | |
| #8 | Spark gaps and corona devices | |
| #9 | Vehicle transmission mounting | |
| #10 | Amplifiers |
| # | Name | Total Patents |
|---|---|---|
| #1 | Duverger Louis | 20 |
| #2 | Durand Ernest-Armand | 2 |
| #3 | Louis Duverger | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB157388A | Improvements in or relating to telegraphic or telephonic communication | |
| GB157385A | Improvements in telegraphic and telephonic transmission by single line without earthreturn | |
| GB157387A | Improvements in or relating to telegraphic or telephonic communication by single line without earth return | |
| GB157386A | Improvements in telegraphic and telephonic transmission by single line without earth return | |
| GB111656A | Improvements in or relating to Carburrettors for Internal Combustion Engines. |