| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 8 | |
| #2 | Austria | 3 | |
| #3 | Germany | 3 | |
| #4 | Denmark | 3 | |
| #5 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Medical technology | |
| #3 | Computer technology | |
| #4 | Textiles and paper |
| # | Technology | |
|---|---|---|
| #1 | Footwear features | |
| #2 | Implantable devices | |
| #3 | Knitting | |
| #4 | Electric digital data processing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kasser A-G Frei | 8 |
| #2 | Frei Elisabeth | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE617309C | Rubber-free varicose vein stocking with heel opening | |
| DE591229C | Protective device for balls and other pressure-sensitive areas of the foot (ball protector) |