| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 13 | |
| #2 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Optics | |
| #3 | Engines, pumps and turbines | |
| #4 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Lubricating | |
| #2 | Supplying combustion engines | |
| #3 | Cameras | |
| #4 | Gearing | |
| #5 | Venting or aerating devices | |
| #6 | Vehicle transmission mounting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Goedeke Karl | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB268678A | Improvements in non-return valves |