1938–1951
Paul Wolff, 1930
Dr. Wolff & Tritschler OHG, 1930
Dr. Wolff & Tritschler OHG, 1934
Paul Wolff, 1934
Paul Wolff, 1936
Dr. Wolff & Tritschler OHG, 1936
Dr. Wolff & Tritschler OHG, 1927
Paul Wolff, 1941