| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 12 | |
| #2 | United Kingdom | 3 | |
| #3 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Mechanical elements | |
| #3 | Machines | |
| #4 | Measurement | |
| #5 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Turning | |
| #2 | Gearing | |
| #3 | Accessories for machine tools | |
| #4 | Grinding or polishing devices | |
| #5 | Unspecified technologies | |
| #6 | Unspecified technologies | |
| #7 | Measuring length, angles and areas | |
| #8 | Toys | |
| #9 | Shafts |
| # | Name | Total Patents |
|---|---|---|
| #1 | Anton Gerstadt | 2 |
| Publication | Filing date | Title |
|---|---|---|
| GB352446A | Improvements in and relating to multiple-spindle automatic lathes | |
| US1870724A | Multiple spindle automatic screw machine | |
| DE509315C | Adjustable roller bearing | |
| GB208698A | Constructional toy | |
| GB222643A | Improvements in and relating to speed change gears | |
| US1493932A | Speed-change gear |