| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 14 | |
| #2 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Machines | |
| #2 | Hot gas positive-displacement engine plants | |
| #3 | Refrigerators | |
| #4 | Cyclically operating valves | |
| #5 | Steam generation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Smal Pierre | 14 |
| #2 | Pierre Smal | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB191202359A | Improvements in Compound Condensing Steam Engines. |