| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 21 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Engines, pumps and turbines | |
| #3 | Mechanical elements | |
| #4 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Dynamo-electric machines | |
| #2 | Internal-combustion piston engines | |
| #3 | Cyclically operating valves | |
| #4 | Cooling of machines | |
| #5 | Shafts | |
| #6 | Gearing | |
| #7 | Non-portable lighting devices | |
| #8 | Cycle accessories |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hardy Jean-Albert | 21 |
| #2 | Appoullot Leon | 1 |