| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Sweden | 5 | |
| #2 | France | 4 | |
| #3 | Italy | 1 | |
| #4 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Gearing | |
| #2 | Clutches and brakes | |
| #3 | Unspecified technologies | |
| #4 | Venting or aerating devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hard Af Segerstad C | 5 |
| #2 | Hard Af Segerstad Carl G | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4222279A | Transmission mechanism |