| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 2 | |
| #2 | Denmark | 2 | |
| #3 | France | 2 | |
| #4 | United Kingdom | 2 | |
| #5 | Sweden | 2 | |
| #6 | Switzerland | 1 | |
| #7 | Finland | 1 | |
| #8 | Japan | 1 | |
| #9 | Norway | 1 | |
| #10 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Making metal sheets | |
| #2 | Unspecified technologies | |
| #3 | Unspecified technologies | |
| #4 | Sawing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Aakerdahl Kenth | 1 |
| #2 | Akerdahl Kenth | 1 |
| #3 | Wennerstroem K F | 1 |
| #4 | Aakerdahl K | 1 |
| #5 | Kaaru Fuiritsupu Uenerusutorum | 1 |
| #6 | Wennerstrom K F | 1 |
| #7 | Aokerdahl Kenth | 1 |
| #8 | Wennerstroem Karl Filip | 1 |
| #9 | Akerdahl K | 1 |
| #10 | Wennerstroem Karl F | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE3116990A1 | MACHINE FOR PRODUCING SCREW-SHAPED TUBE TUBES | |
| GB2012200A | Apparatus for precutting metal strip in the manufacture of spiral strip pipes eg ventilation ducts |