| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 11 | |
| #2 | United Kingdom | 2 | |
| #3 | Spain | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Vehicle connections | |
| #2 | Vehicle brake control systems | |
| #3 | Motor vehicles |
| # | Name | Total Patents |
|---|---|---|
| #1 | Karnath Dipl-Ing Dr Kurt | 11 |
| #2 | Karnath Klaus-Juergen | 10 |
| #3 | Karnath Guenther | 9 |
| #4 | Stahl Dietrich | 5 |
| Publication | Filing date | Title |
|---|---|---|
| GB811196A | Improvements in or relating to couplings for securing trailers to vehicles | |
| ES229839A1 | Improvement of devices to release the trailer from the tractor vehicle (Machine-translation by Google Translate, not legally binding) | |
| GB822724A | Apparatus for releasing the coupling between a towing vehicle and a trailer |