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| Type | Company |
| Location | Berlin; Augsburg (Germany; Bavaria) |
| Founding | 1851 |
| Industry | Metal Industry |
| NACE code | 25.21 |
| Holdings | Newspaper clippings: 1920, 1921, 1923-1930, 1963-1982 Annual reports: 1920/21-1923/24, 1924, 1925, 1928-1942 |
| Signature | A10 H 211 |
| includes | Haag Heizung und Lüftung GmbH; Haag Maschinen- und Röhrenfabrik AG; Johannes Haag, Maschinen- und Röhrenfabrik AG (1843-1930, GND 10203483-7) |
| URI | https://pm20.zbw.eu/folder/co/043139 |
| ID | co/043139 |