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| Type | Company | 
| Location | Chelmsford (United Kingdom) | 
| Founding | 1897 | 
| Industry | Electrical Industry | 
| Subsidiary | Marconi International Marine Co., Ltd. | 
| Succeeding org. | GEC Marconi, Ltd. | 
| Related org. | RAI Radio Televisione Italiana SpA (Rom) | 
| GND | 1087234387 | 
| Holdings | Newspaper clippings: 1910…1940 Annual reports: 1911-1913, 1931, 1932  | 
| Signature | A22 M 21 | 
| URI | https://pm20.zbw.eu/folder/co/070592 | 
| ID | co/070592 |