| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 4 | |
| #2 | Switzerland | 3 | |
| #3 | United Kingdom | 3 | |
| #4 | Belgium | 1 | |
| #5 | Germany | 1 | |
| #6 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Engines, pumps and turbines | |
| #3 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Non-positive-displacement pumps | |
| #2 | Fluid heaters | |
| #3 | Parachutes | |
| #4 | Burners | |
| #5 | Air-conditioning | |
| #6 | Domestic heating systems |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wiebe Draijer | 2 |
| #2 | Beyerman Jan Johan Herman | 1 |
| #3 | De Jong Albert | 1 |
| #4 | Herman Beyerman Jan Johan | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1072607A | Burner device | |
| GB983469A | Axial flow fan | |
| US2704062A | Air heating furnace | |
| GB691090A | An air-heating stove for heating rooms and the like |