| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 9 | |
| #2 | United Kingdom | 3 | |
| #3 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Electrical machinery and energy | |
| #3 | Telecommunications | |
| #4 | Control | |
| #5 | Environmental technology | |
| #6 | Engines, pumps and turbines | |
| #7 | Furniture and games |
| # | Name | Total Patents |
|---|---|---|
| #1 | Werner Aron | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2336917A | Electric contact | |
| GB547006A | Improvements in and relating to electric contacts | |
| GB393902A | Improvements in flexible valves for gas meters | |
| GB371170A | Improvements in change-over mechanism for valves of gas meters | |
| DE421521C | Tube receiving device for wireless telephony |