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4 Residence. Subject of the Kingdom of Württemberg during the German Empire (1879–1896) Stateless (1896–1901) Citizen of Switzerland (1901–1955) Austrian subject of the Austro-Hungarian Empire (1911–1912) Subject of the Kingdom of Prussia during the German Empire (1914–1918) German citizen of the Free State of Prussia (Weimar Republic, 1918–1933) Citizen of the United States (1940–1955)
13/3/20175 Education: School federal polytechnic of Zurich he obtained a (Bachelor in science) Luitpold – Gymnasium Alte Kantonsschule Aaran University of Zurich
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