Leo Graeff
German engineer and entrepreneur (1836-1889)
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| Intro | German engineer and entrepreneur (1836-1889) | |
| Places | Germany | |
| was | Businessperson Engineer Entrepreneur | |
| Work field | Business Engineering | |
| Gender |
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| Birth | 9 February 1836, Trier | |
| Death | 4 August 1889Herne (aged 53 years) |