| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Finland | 2 | |
| #2 | Sweden | 2 | |
| #3 | Belgium | 1 | |
| #4 | Canada | 1 | |
| #5 | Switzerland | 1 | |
| #6 | Germany | 1 | |
| #7 | France | 1 | |
| #8 | Italy | 1 | |
| #9 | Japan | 1 | |
| #10 | Netherlands | 1 | |
| #11 | Norway | 1 | |
| #12 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Construction of roads | |
| #2 | Dredging |
| # | Name | Total Patents |
|---|---|---|
| #1 | Eriksson Tord Erik Birger | 7 |
| #2 | Eriksson Tord E B | 2 |
| #3 | Torudo Eritsuku Birugaa Eritsu | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4247148A | Asphalt cutter | |
| FI781659A | REDSKAPSHAOLLARE Foer GRAEVMASKINER |