Career
In 1932, Himmelheber invented particle board. During the Second World War Himmelheber served as pilot in the fighter unit Jagdgeschwader 2. During the Battle of Britain he was a leutnant and technical officer of Stab.I/JG 2 (staff flight of the I group of JG 2).
He had one victory on the 30th of August, 1940, over an Royal Air Force Hurricane near Goudhurst.
He was shot down himself on the sixth of September, 1940, over Staplehurst, Kent, and became a Prisoner Of War at Woolwich Hospital.