Carl Clemens Bücker founded first SAAB company 1921. In 1932 he sold his shareholding and formed Bücker Flugzeugbau at Berlin-Johannisthal. Products were aerobatic sporting/training aircraft: Bü 131 Jungmann, Bü 133 Jungmeister, Bü 180 Student, Bü 181 Bestmann and Bü 182 Kornett. All outstandingly successful, many licensed to other countries.