| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 11 | |
| #2 | United Kingdom | 5 | |
| #3 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Measurement | |
| #3 | Telecommunications | |
| #4 | Consumer goods | |
| #5 | Control |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rudolf Wetzer | 2 |
| #2 | Curd Nube | 1 |
| #3 | Wetzer Rudolf | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB386354A | Improvements in electromagnetic relay mechanism responsive to voltage control | |
| GB357053A | Improvements in recording apparatus for investigating the speed of vehicles | |
| GB288581A | Improvements in time recorders | |
| GB251137A | Improvements in relay mechanism responsive to voltage control | |
| US1452858A | Engraving machine | |
| DE626936C | Arrangement for monitoring the state of charge of accumulators as a function of the battery voltage | |
| DE419071C | Voltage contact relay |