| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 4 | |
| #2 | Austria | 3 | |
| #3 | Canada | 3 | |
| #4 | Germany | 3 | |
| #5 | France | 3 | |
| #6 | United States | 2 | |
| #7 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Medical technology |
| # | Technology | |
|---|---|---|
| #1 | Motor vehicles | |
| #2 | Vehicle brake control systems | |
| #3 | Operating tables |
| # | Name | Total Patents |
|---|---|---|
| #1 | Welti-Furrer A-G A | 4 |
| #2 | Leuzinger Jakob | 3 |
| #3 | Jakob Leuzinger | 2 |
| Publication | Filing date | Title |
|---|---|---|
| GB296445A | Improvements in or relating to vehicle trailers | |
| US1774022A | Four-wheel hydraulic brake for trailers | |
| DE471394C | When the trailer hits the towing vehicle, the trailer brake acts | |
| DE465724C | Chassis frame for vehicle trailers | |
| CA287547A | Turntable | |
| DE470983C | Bogie for motor vehicle trailer | |
| CA297838A | Four-wheel hydraulic brake for trailers | |
| CA289360A | Chassis for motor vehicle trailers |