| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Denmark | 3 | |
| #2 | Finland | 3 | |
| #3 | Austria | 2 | |
| #4 | Switzerland | 2 | |
| #5 | France | 1 | |
| #6 | United Kingdom | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machine tools | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Gearing | |
| #2 | Making gears or toothed racks | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hjalmar Wingqvist Erik | 3 |
| #2 | Svenska Kugghjulsfabriken Akti | 2 |
| #3 | Hjalmar Winqvist Erik | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1390414A | Gear-wheel | |
| GB129970A | Gear-wheel. |