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| Type | Company |
| Location | Friedrichshain (Berlin) |
| Founding | 1921 |
| Industry | Electrical Industry; Precision Engineering and Optical Industry |
| NACE code | 27.2, 27.4 |
| Holdings | Newspaper clippings: 1927-1933,1938,1941,1942 Annual reports: 1916/17-1930/31 |
| Signature | A10 D 563 |
| includes | Diamant-Gasglühlicht GmbH (-1920); Ross-Batterien; Rosslicht-GmbH |
| URI | https://pm20.zbw.eu/folder/co/042337 |
| ID | co/042337 |