1933–1937
Paul Wolff, 1937
Dr. Wolff & Tritschler OHG, 1938
Paul Wolff, 1942
Dr. Wolff & Tritschler OHG, 1940
Dr. Wolff & Tritschler OHG, 1930
Dr. Wolff & Tritschler OHG, 1935
Paul Wolff, 1930
Dr. Wolff & Tritschler OHG, 1934