| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 13 | |
| #2 | France | 2 | |
| #3 | United Kingdom | 2 | |
| #4 | Switzerland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Transport | |
| #3 | Furniture and games | |
| #4 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Lighting device details | |
| #2 | Electrically-conductive connections | |
| #3 | Cycle accessories | |
| #4 | Domestic washing | |
| #5 | Swimming pools | |
| #6 | Cables and insulators |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ruthen Wilhelm Aus Den | 2 |
| #2 | Den Ruthen Wilhelm Aus | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE673356C | Control device for direction indicators of bicycles and motorcycles | |
| DE617499C | Direction indicators, in particular for small motor vehicles | |
| DE619551C | Direction indicators | |
| GB301658A | Improvements in or relating to suspension apparatus for electric lamps or the like flex-suspended electric devices | |
| GB147599A | Improvements in electric contact plugs and sockets |