| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 11 | |
| #2 | United Kingdom | 2 | |
| #3 | France | 1 | |
| #4 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Foods and drinks | |
| #3 | Furniture and games | |
| #4 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Electric switches | |
| #2 | Electric motor controls | |
| #3 | Meat processing | |
| #4 | Domestic washing | |
| #5 | General building constructions |
| # | Name | Total Patents |
|---|---|---|
| #1 | Schweitzer Wilhelm | 4 |
| #2 | Mermagen Jakob | 1 |
| #3 | Wilhelm Schweitzer | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB499421A | Improvements in and relating to apparatus for controlling electrically driven reciprocating machines | |
| US1804063A | Electric switching apparatus | |
| GB321523A | Electromagnetic switch |