| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 19 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Mechanical elements | |
| #3 | Electrical machinery and energy | |
| #4 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Grinding or polishing devices | |
| #2 | Gearing | |
| #3 | Sawing | |
| #4 | Measuring length, angles and areas | |
| #5 | Dynamo-electric machines | |
| #6 | Accessories for machine tools |
| Publication | Filing date | Title |
|---|---|---|
| DE373257C | Pendulum grinding machine with swiveling grinding wheel frame | |
| DE336861C | Grinding motor for any type of current | |
| DE335935C | Grinding motor for any type of current with grinding body sitting directly on the motor shaft |