| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 13 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machine tools | |
| #3 | Thermal processes | |
| #4 | Mechanical elements | |
| #5 | Measurement | |
| #6 | Surface technology and coating |
| # | Technology | |
|---|---|---|
| #1 | Hydraulic engineering | |
| #2 | Soldering, welding and flame cutting | |
| #3 | Compressed gas holders | |
| #4 | Processes for applying fluent materials | |
| #5 | Swimming pools | |
| #6 | Domestic stoves | |
| #7 | Measuring volume | |
| #8 | Details of furnaces | |
| #9 | Pipes | |
| #10 | Punching metal |