| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 2 | |
| #2 | Switzerland | 2 | |
| #3 | Germany | 2 | |
| #4 | Sweden | 2 | |
| #5 | United States | 2 | |
| #6 | Austria | 1 | |
| #7 | Belgium | 1 | |
| #8 | Finland | 1 | |
| #9 | Italy | 1 | |
| #10 | Japan | 1 | |
| #11 | Netherlands | 1 | |
| #12 | Norway | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Fluid heaters |
| # | Name | Total Patents |
|---|---|---|
| #1 | Siegrist Eugen Josef | 6 |
| #2 | Siegrist Eugen J | 2 |
| #3 | Schworer Emil | 2 |
| #4 | Schwoerer Emil | 1 |
| #5 | Emiiru Shiyubueeraa | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CH638883A5 | Boiler. | |
| DE2721832A1 | BOILER |