| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 23 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Grinding or polishing devices | |
| #2 | Electric motor controls | |
| #3 | Turning | |
| #4 | Accessories for machine tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Brinkmann Ewald | 16 |
| #2 | Arning Paul | 7 |
| #3 | Wortmann Willi | 4 |
| #4 | Wortmann W | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE841709C | Circumferential scrubbing and polishing bell |