Motorboat builder Alphonse Tellier (one of his craft towed Voisin's float glider in 1905) built his first aircraft, for Emile Dubonnet, in 1909-1910, but went into liquidation in 1911. Re-formed upon outbreak of First World War, Tellier's company built floats and hulls for other marine aircraft before flying prototype of T2 flying-boat in June 1916. This soon crashed, but with new funds from Dubonnet Tellier evolved the T3 two-seat bomber flying-boat of 1917 and its cannon-armed derivative, the TC6. Most were built by Nieuport and other manufacturers. Final products were the unsuccessful twin-engined T5 flying-boat and tri-motor T7. In August 1918 the company was absorbed by Nieuport, with Tellier as its marine aircraft designer.