| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Belgium | 4 | |
| #2 | France | 4 | |
| #3 | United States | 2 | |
| #4 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Control | |
| #2 | Measurement | |
| #3 | Weapons |
| # | Technology | |
|---|---|---|
| #1 | Registering devices | |
| #2 | Measuring speed and acceleration | |
| #3 | Weapon sights |
| # | Name | Total Patents |
|---|---|---|
| #1 | Oscar Chatelain | 2 |
| #2 | Chatelain Oscar | 1 |
| #3 | Jeanmonod Maurice | 1 |
| #4 | Maurice Jeanmonod | 1 |
| Publication | Filing date | Title |
|---|---|---|
| FR1321025A | Vehicle tachograph | |
| FR1322397A | Tachograph and use of this tachograph for reading the rest time of two vehicle drivers | |
| FR1321026A | Vehicle tachograph recording device | |
| FR1325109A | Tachograph | |
| US3197779A | Tachograph adapted to record the periods of rest of vehicle drivers working in alternation |