Patent:GB129290
Patent: | GB 129290 |
Titel: | Improvements in or relating to Apparatus for Electric Step-by-step Signalling Systems |
Datum: | 04.10.1920 |
Ort: | |
Land: | Großbritannien |
Person: | Ford, Hannibal Choate (P) |
Firma: | |
Links im Rechnerlexikon: | |
Schlagworte: | |
Link zum Patentamt: (ohne Garantie) | GB129290 |
- DATUM: 04.10.1920
- TITEL: Improvements in or relating to Apparatus for Electric Step-by-step Signalling Systems.
- PERSON: FORD HANNIBAL CHOATE US