| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 11 | |
| #2 | Germany | 4 | |
| #3 | United Kingdom | 2 | |
| #4 | United States | 2 | |
| #5 | Switzerland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Guiding railway traffic | |
| #2 | Radio navigation | |
| #3 | Power supply for electric vehicles |
| # | Name | Total Patents |
|---|---|---|
| #1 | Arthur Tuot Raymond | 2 |
| #2 | Etudes Electrotechniques Socie | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB634082A | Improvements in signalling arrangements for railways | |
| US2571499A | Railroad signaling device | |
| DE706696C | Signaling device for monitoring rail-bound train traffic | |
| DE718893C | Signaling device for railways | |
| DE649487C | Device for securing railways |