| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 6 | |
| #2 | Germany | 4 | |
| #3 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Electrical machinery and energy | |
| #3 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Rotary pistons | |
| #2 | Rotary-pistons | |
| #3 | Accessories for machine tools | |
| #4 | Dynamo-electric machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Marcel Jean Pierre | 3 |
| #2 | Pierre Marcel Jean | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US3945780A | Rotary sliding partition machine with fluid chambers at the partition ends | |
| FR2227670A1 | Hydroelectric generator-pump has inner stator and rotor - for pumping and coaxial outer stator and rotor for generating |