XP-13 Viper
නිෂ්පාදකයාThomas-Morse Aircraft
තවම පරිවර්තනය කර නැත — ඉංග්රීසියෙන් පෙන්වයි.
The XP-13 Viper was a prototype biplane fighter aircraft designed by the American company Thomas-Morse Aircraft Corporation. The airplane was delivered to the United States Army in 1929, but they did not adopt it.
