| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 3 | |
| #2 | Switzerland | 3 | |
| #3 | Canada | 2 | |
| #4 | United Kingdom | 2 | |
| #5 | Spain | 1 | |
| #6 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Furnaces |
| # | Name | Total Patents |
|---|---|---|
| #1 | Forsbach Otto | 11 |
| #2 | Clerc Edouard | 3 |
| #3 | Clerc Eduard | 2 |
| Publication | Filing date | Title |
|---|---|---|
| CA104144A | Muffle furnace | |
| GB190610852A | Improvements in and relating to Muffle Furnaces | |
| CA74204A | Smelting furnace | |
| US722831A | Crucible smelting-furnace. | |
| GB190022777A | A New or Improved Crucible Smelting Furnace. |