| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 3 | |
| #2 | France | 3 | |
| #3 | Switzerland | 2 | |
| #4 | United Kingdom | 2 | |
| #5 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Textiles and paper | |
| #2 | Engines, pumps and turbines | |
| #3 | Electrical machinery and energy | |
| #4 | Environmental technology | |
| #5 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Laces and braids | |
| #2 | Cables and insulators | |
| #3 | Special textiles | |
| #4 | Ropes | |
| #5 | Climate change mitigation in transportation | |
| #6 | Internal-combustion piston engines | |
| #7 | Rotary pistons |
| # | Name | Total Patents |
|---|---|---|
| #1 | Erwin Walter | 4 |
| #2 | Walter Erwin | 3 |
| Publication | Filing date | Title |
|---|---|---|
| GB762343A | Improvements in multi-core electric cables | |
| DE662195C | Rotary piston internal combustion engine | |
| DE633456C | Rotary piston internal combustion engine | |
| GB138069A | Improvements in or relating to plaiting machines | |
| US1328216A | Braiding-machine |