Caproni Ca.1 (Italy, 1914) Caproni Ca.3 (Italy, 1916) Caproni Ca.4 (Italy, 1917) Caproni Ca.5 (Italy, 1917) Caproni Ca.95 (Italy, 19??) Caproni Ca.97 (Italy, 1927) Caproni Ca.101 (Italy, 1928) Caproni Ca.131 (Italy, 19 Caproni Ca.132 (Italy, 1934) Caproni Ca.133 (Italy, 1934) Caudron C.25 (France, 1919)[11] Caudron C.37 (France, 1920)[12] Caudron C.39 (France, 1921)[13] Caudron C.61 (France, 1921) Caudron C.81 (France, 1923)[14] Caudron C.180 (France, 1930)[15] Caudron C.183 (France, 1923)[16] Charpentier C-1 (France, 1935)[17] CNA Delta (Italy, 1931)[18] CNNA HL-8 (Brazil, 1943) Conroy Tri-Turbo-Three (US, 1969) Consolidated XPY-1 (prototype only) (US, 1929) Consolidated XP2Y-1 (prototype only) (US, 1932) Couzinet 10 (France, 1928)[19] Couzinet 21 (France, 1931)[20] Couzinet 22 (France, 1932)[21] Couzinet 27 (France, 1928)[22] Couzinet 30 (France, 1930)[23] Couzinet 33 Biarritz (France, 1931)[24] Couzinet 40 (France, 1932)[25] Couzinet 70 (France, 1932)[26] Couzinet 100 (France, 1933)[27] Couzinet 101 (France, 1934)[28] Couzinet 103 (France, 1933)[29] Crawford Special (US, 1929)[30] Curtiss Eagle I (US, 1919) Curtiss Model H (prototype only) (US, 1914) Curtiss NC (Prototype only) (US, 1918) DAR 4 (Bulgaria, 1930) Dewoitine D.31 (France, 1932) Dewoitine D.332 (France, 1933) Dewoitine D.333 (France, 1934) Dewoitine D.338 (France, 1936) Dewoitine D.342 (France, 1939) Dewoitine D.430 (France, 1932)[31] de Havilland DH.72 (UK, 1931) de Havilland Australia DHA-3 Drover (Australia, 1948) de Havilland Hercules (UK, 1926) Dornier Do 24 (Germany, 1937) Dornier Y (Germany, 1930)