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| Type | Company |
| Location | Frankfurt am Main (Hesse) |
| Founding | 1879 |
| Industry | Electrical Industry |
| NACE code | 26.51 |
| Succeeding org. | Mannesmann AG |
| GND | 2000998-7 |
| Holdings | Newspaper clippings: 1912, 1918-1923, 1925-1943, 1968-1997 Annual reports: 1901-1944,( 1945 ),1946-1993 |
| Signature | A10 H 101 |
| includes | EB Hartmann & Braun GmbH; H & B (Hartmann & Braun) |
| URI | https://pm20.zbw.eu/folder/co/007255 |
| ID | co/007255 |