A Brief History of the Marque
Manufactured 1903 - 1925
Hans Grade of Brandenburg made cars, motorcycles and aeroplanes, all of which were powered by his own two-stroke engines. The motorcycles were designed by Hans Plog and used 118cc and 132cc engines.
Germany's first two aviators were bicycle racers, August Euler and Hans Grade. There is a Hans Grade museum in Borkheide Germany, and also an aviation club and a modelmaker's club of the same name. Grade won a small fortune in 1909 when he was awarded the prize for flying long and high, and is also credited with the design of the first airport. He founded Grade Flugzeugbau which produced some 80 aircraft prior to WWI.
His list of accomplishments would certainly fill a book - and if it has not already been written the movie has certainly been made in which Hans Grade starred as himself.