| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 4 | |
| #2 | Denmark | 3 | |
| #3 | United States | 3 | |
| #4 | United Kingdom | 2 | |
| #5 | Italy | 2 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Electric switches | |
| #2 | Unspecified technologies | |
| #3 | Unspecified technologies | |
| #4 | Distribution of electric power |
| # | Name | Total Patents |
|---|---|---|
| #1 | Schadow R | 6 |
| #2 | Schadow Rudolf | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3855961A | Indicating push button mechanism | |
| GB1340444A | Push button switch with a switch position indicating means | |
| US3722313A | Push button switch units |