The initials AGO had a variety of meanings (such as Aktiengesellschaft Otto) during the company's lifetime, but in its final version stood for Apparatebau GmbH Oschersleben.
The company's first successful aircraft under head designer, Gabriel Letsch, was an observation biplane with a pusher propeller that soon became the standard equipment of the Bayerischen Fliegertruppe.
In 1912, a separate division was set up in Johannisthal under the name Ago Flugzeugwerke, with Elisabeth Woerner and Hermann Fremery as directors.
After the Armistice, Otto tried automobile manufacturing, but in 1919 had to dismiss the employees of the Berlin company and divest himself of the Oschersleben factory.
The company continued, and in the same year developed 20 new hectares of factory space near the Sudenburger Maschinenfabrik und Eisengießerei AG plant at Magdeburg.
From 1943 onwards, due to its key role in producing the Fw 190 the AGO factory came under attack by Allied bombing raids, suffering increasingly heavy damage up to the end of the war.