| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 7 | |
| #2 | Austria | 1 | |
| #3 | France | 1 | |
| #4 | United Kingdom | 1 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Spark gaps and corona devices | |
| #2 | Gearing | |
| #3 | Unspecified technologies | |
| #4 | Cycles |
| # | Name | Total Patents |
|---|---|---|
| #1 | Egg Rudolf | 10 |
| #2 | Rudolf Egg | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1262932A | Worm-gear. | |
| GB189813374A | Improvements in or connected with Motor Driven Street Vehicles and the like. |