| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Sweden | 6 | |
| #2 | France | 2 | |
| #3 | United Kingdom | 2 | |
| #4 | Germany | 1 | |
| #5 | EPO (European Patent Office) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machine tools | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Foundations and excavations | |
| #2 | Structural elements | |
| #3 | Shaping clay | |
| #4 | Metal wire processing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Johansson J R | 4 |
| #2 | Johansson John Ragnar | 2 |
| #3 | Christiansen S R | 1 |
| #4 | Olsson G | 1 |
| #5 | Johansson J R V | 1 |
| #6 | Ostergren L V | 1 |
| #7 | Grevare B | 1 |
| #8 | Borg S B I | 1 |
| #9 | Ostergren L | 1 |
| Publication | Filing date | Title |
|---|---|---|
| SE8301848D0 | An arrangement for the scarfing of pile drives | |
| EP0038311A2 | Improvements in pile driving machines | |
| SE8101668L | Factory unit for production of concrete objects, preferably concrete piles | |
| GB1432451A | Hoisting mechanism | |
| GB1433349A | Pile driver |