Input (grade 13): On September 7, 1949 he was elected as the first president of the federal Bundesrat of Germany, acting as head of state until Theodor Heuss was elected five days later.
Output (grade 11): From 7 September 1949 to 6 September 1950 he was the first President of the Bundesrat. This also mean that between 7 and 13 September he was Acting President of Germany, until Theodor Heuss was elected Federal President.