| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 6 | |
| #2 | Austria | 4 | |
| #3 | Switzerland | 3 | |
| #4 | Denmark | 3 | |
| #5 | Germany | 2 | |
| #6 | United Kingdom | 2 | |
| #7 | Greece | 1 | |
| #8 | Ireland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Presses | |
| #2 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | N V Maatschappij Tot Exploitat | 3 |
| #2 | Duden Dipl-Ing Gustav | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE670125C | Device for filling a press mold or the like with powdery material by being thrown in by means of centrifugal force | |
| IE14090L | Briquettes | |
| GB440811A | Method for the manufacture of briquettes from normally noncoherent substances, particularly coal dust, lignite dust and the like | |
| GB427969A | Method and apparatus for the manufacture of briquettes from normally non-coherent substances in particular from coal dust, lignite dust and the like |