| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 6 | |
| #2 | France | 2 | |
| #3 | United Kingdom | 2 | |
| #4 | Denmark | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Packaging and shipping |
| # | Technology | |
|---|---|---|
| #1 | Cables and insulators | |
| #2 | Installation of electric cables | |
| #3 | Cranes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Proos Cornelis Frederick | 1 |
| #2 | Proos Cornelis Frederik | 1 |
| #3 | Kreuger Frederik Hendrik | 1 |
| #4 | Hendrik Kreuger Frederik | 1 |
| #5 | Henri Willem Frederik Van T Gr | 1 |
| #6 | Hendrik Kreuger Frederick | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE1283315B | Locking sleeve | |
| GB783064A | Improvements in and relating to the manufacture of electric communication cables | |
| GB724469A | Improved method and apparatus for producing electric cables and cables produced thereby | |
| DE1031853B | Electric cable and process for its manufacture |