Initials of Ago were those of Aerowerke Gustav Otto
(founded 1912), but the name was first applied in 1911
to products of Aeroplanbau G. Otto and Alberti.
biplane of Gustav Otto (German aviation pioneer,
1883-1926) and developments of Farman design were
early products, but in 1912/13 came a seaplane of original
design, followed by other types. During 1915/16 developed
three pusher reconnaissance types: C.I, C.II ,and C.III with twin tail-booms but showing high efficiency despite
C.I caused a stir on introduction at the Western
Front by reason of twin-boom design, for which Swiss
engineer A. Haefeli (earlier with Farman) was responsible.
C.IV was tractor biplane with sharply tapered wings; about
70 in service 1917/18. Experimental types included seaplanes.
Ago name disappeared until late 1930s, but during
the Second World War was again current for Ago 192
Kurier light twin-engined monoplane (built 1938).