| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 6 | |
| #2 | Switzerland | 3 | |
| #3 | Denmark | 2 | |
| #4 | United Kingdom | 1 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Milling |
| # | Name | Total Patents |
|---|---|---|
| #1 | Erfurth Ottomar | 13 |
| Publication | Filing date | Title |
|---|---|---|
| US676982A | Edge-mill. | |
| GB190005753A | Improved Edge-runner Mill for Grinding Clay and similar Substances. |