| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 3 | |
| #2 | Denmark | 3 | |
| #3 | Canada | 2 | |
| #4 | Switzerland | 2 | |
| #5 | Spain | 2 | |
| #6 | United Kingdom | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Heat-exchanger without contact |
| # | Name | Total Patents |
|---|---|---|
| #1 | Steffen Heinrich | 11 |
| #2 | Heinrich Steffen | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1078884A | Radiator made of wrought-iron. | |
| GB191118272A | Improvements in Radiators for Heating Buildings, and the like. | |
| CA219605A | Radiator | |
| CA222616A | Radiator |