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| Type | Company |
| Location | Neuchâtel (Switzerland) |
| Industry | Precision Engineering and Optical Industry |
| Holdings | Newspaper clippings: 1926…1943,1965-1985 |
| Signature | A34 E 13 |
| URI | https://pm20.zbw.eu/folder/co/056738 |
| ID | co/056738 |