| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 41 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Engines, pumps and turbines | |
| #3 | Machine tools | |
| #4 | Materials and metallurgy | |
| #5 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Shafts | |
| #2 | Pumps | |
| #3 | Construction of bridges | |
| #4 | General building constructions | |
| #5 | Metal tempering | |
| #6 | Cyclically operating valves | |
| #7 | Presses | |
| #8 | Punching metal | |
| #9 | Burners | |
| #10 | Mining |
| # | Name | Total Patents |
|---|---|---|
| #1 | Toussaint Heinrich | 7 |
| Publication | Filing date | Title |
|---|---|---|
| FR1093156A | Improvements made to pumps with several pressure stages, more specifically for machine tools |