| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 21 | |
| #2 | United Kingdom | 2 | |
| #3 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Textiles and paper | |
| #2 | Machine tools | |
| #3 | Optics | |
| #4 | Mechanical elements | |
| #5 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Footwear manufacturing machines | |
| #2 | Mechanical leather treatments | |
| #3 | Safety devices | |
| #4 | Perforating | |
| #5 | Machines | |
| #6 | Punching metal | |
| #7 | Grinding or polishing devices | |
| #8 | Processing photographic materials | |
| #9 | Grinding tools | |
| #10 | Cameras |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sandt Kurt | 2 |
| #2 | Kurt Sandt | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2135016A | Sole-pressing last | |
| GB466432A | Container for photographic paper rolls and the like | |
| GB384537A | Improvements in machines for roughening leather parts of boots and shoes |