| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 3 | |
| #2 | United Kingdom | 3 | |
| #3 | Austria | 2 | |
| #4 | Germany | 2 | |
| #5 | France | 2 | |
| #6 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Computer technology | |
| #2 | Electrical machinery and energy | |
| #3 | Control |
| # | Technology | |
|---|---|---|
| #1 | Electric digital data processing | |
| #2 | Electric switches | |
| #3 | Alarm systems |
| # | Name | Total Patents |
|---|---|---|
| #1 | El-Re-Ma S A | 2 |
| #2 | Hoppe Walter Dr | 1 |
| #3 | Hoppe Dr Walter | 1 |
| #4 | A El-Re-Ma S | 1 |
| #5 | Walter Hoppe | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2854541A | Switching device | |
| DE865331C | Process for actuation of contacts and magnetic multiple switching unit to carry out this process | |
| DE944586C | Switching device for calculating machines |