Complex sentence: Kamera-Werkstätten Guthe & Thorsch, K.W. for short, was established c.1920 in Dresden, by Paul Guthe and Benno Thorsch to manufacture cameras and associated products, for one the Patent Etui 6 × 9 plate camera previously designed by Guthe.
Split into simpler sentences: Kamera-Werkstätten Guthe & Thorsch, K.W. for short, was established c.1920 in Dresden, by Paul Guthe and Benno Thorsch to manufacture cameras and associated products. The first was the "Patent Etui 6 × 9" plate camera previously designed by Guthe.