| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 7 | |
| #2 | Switzerland | 1 | |
| #3 | Germany | 1 | |
| #4 | United Kingdom | 1 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Thermal processes | |
| #3 | Chemical engineering | |
| #4 | Packaging and shipping |
| # | Technology | |
|---|---|---|
| #1 | Rotary-pistons | |
| #2 | Feeding fuel to combustion device | |
| #3 | Manipulators | |
| #4 | Rotary pistons | |
| #5 | Controlling combustion | |
| #6 | Mixing | |
| #7 | Positive-displacement engines | |
| #8 | Supplying combustion engines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Crevoisier Marcel | 2 |
| #2 | Marcel Crevoisier | 2 |
| Publication | Filing date | Title |
|---|---|---|
| GB839149A | Improvements in or relating to rotary injection-compressors | |
| US2918009A | Injection-compressor apparatus | |
| DE1116338B | Rotary lobe compressors |