| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 6 | |
| #2 | Austria | 3 | |
| #3 | Germany | 2 | |
| #4 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Transport | |
| #3 | Mechanical elements | |
| #4 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Rotary-pistons | |
| #2 | Gearing | |
| #3 | Motor vehicles | |
| #4 | Vehicle transmission mounting | |
| #5 | Crop agriculture | |
| #6 | Harvesting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Josef Koepfli | 6 |
| #2 | Koepfli Josef | 6 |
| Publication | Filing date | Title |
|---|---|---|
| WO8706668A1 | Self-locking differential for motor vehicles |