| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 12 | |
| #2 | Germany | 1 | |
| #3 | United Kingdom | 1 | |
| #4 | Netherlands | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Control | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Controlling combustion | |
| #2 | Systems controlling non-electric variables | |
| #3 | Ignition and extinguishing | |
| #4 | Burners | |
| #5 | Gearing |
| Publication | Filing date | Title |
|---|---|---|
| DE1729891B2 | Gas switch with thermoelectric fuse | |
| GB469871A | Improvements in valve arrangements for controlling the supply to gas consuming devices |