| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Sweden | 5 | |
| #2 | Canada | 4 | |
| #3 | Germany | 4 | |
| #4 | France | 4 | |
| #5 | Norway | 4 | |
| #6 | Netherlands | 3 | |
| #7 | United States | 3 | |
| #8 | Italy | 2 | |
| #9 | Switzerland | 1 | |
| #10 | Denmark | 1 | |
| #11 | Japan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Packaging and shipping |
| # | Technology | |
|---|---|---|
| #1 | Scaffolding | |
| #2 | Foundations and excavations | |
| #3 | Unspecified technologies | |
| #4 | Lifting and pushing | |
| #5 | Hydraulic engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ludvigson Birger | 18 |
| #2 | Biruieru Rudobiguson | 1 |
| Publication | Filing date | Title |
|---|---|---|
| SE7909457L | Device for stretching a reinforcement strand | |
| US4376527A | Device for tensioning a reinforcing strand | |
| CA1048896A | Device for transferring an impact to an elongate member | |
| CA1043989A | Method of eliminating an uneven stress distribution in an elongated reinforcing member | |
| CA960876A | Method and means for generating a pressure wave in an elongated body, for instance for driving piles |