| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Sweden | 4 | |
| #2 | Canada | 2 | |
| #3 | United States | 2 | |
| #4 | Brazil | 1 | |
| #5 | Germany | 1 | |
| #6 | United Kingdom | 1 | |
| #7 | Japan | 1 | |
| #8 | USSR (Union of Socialist Soviet Republics) | 1 | |
| #9 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Agriculture | |
| #2 | Measurement | |
| #3 | Control | |
| #4 | Environmental technology | |
| #5 | Engines, pumps and turbines | |
| #6 | Machines | |
| #7 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Horticulture | |
| #2 | Measuring distances | |
| #3 | Reduction of greenhouse gas emissions | |
| #4 | Unspecified technologies | |
| #5 | Systems controlling non-electric variables | |
| #6 | Dredging | |
| #7 | Nuclear reactors |
| # | Name | Total Patents |
|---|---|---|
| #1 | Keskitalo Tage Oskar | 4 |
| #2 | Widegren Lars Harald | 4 |
| #3 | Widegren Lars | 2 |
| #4 | Widegren L H | 2 |
| #5 | Widegren L | 2 |
| #6 | Keskitalo T O | 2 |
| #7 | Keskitalo Tage O | 2 |
| #8 | Widegren Lars H | 2 |
| #9 | Keskitalo O | 1 |
| #10 | Johansson S | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4488586A | Method and device for cleaning stumps | |
| SE7908564L | Device for correction of horizontal position | |
| GB1514249A | Tree felling |