| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 16 | |
| #2 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Civil engineering | |
| #3 | Measurement | |
| #4 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Transport or storage devices | |
| #2 | Dredging | |
| #3 | Measuring electric variables | |
| #4 | Emergency protective circuit arrangements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Brennecke Friedrich | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB187322A | Improvements in devices for testing the insulation of electric three-phase high-tension conductors |