| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 11 | |
| #2 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Textiles and paper | |
| #2 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Fibrous raw materials | |
| #2 | Grinding tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Georg Nenzel | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US1652044A | Apparatus for feeding mechanical grinding machines for producing wood pulp | |
| US1541521A | Wood-grinding means |