| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 10 | |
| #2 | Switzerland | 2 | |
| #3 | Belgium | 1 | |
| #4 | Germany | 1 | |
| #5 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Machines for making railways | |
| #2 | Railway bodies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kihn Ateliers De Constructions | 1 |
| #2 | Nicolas Kihn | 1 |
| #3 | Kihn Nicolas | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE1222957B | Heart for switches and crossings | |
| GB674988A | Improvements in rail track elements |