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| Patents for B64C 33 - Ornithopters (708) |
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| 07/19/1984 | WO1984002692A1 Glider | | 01/19/1984 | WO1984000136A1 Aerodynamically-induced wing-flapping for the propulsion of ornithopters | | 01/18/1984 | EP0098355A2 Aerodynamically-induced wing-flapping for the propulsion of ornithopters | | 11/29/1983 | US4417707 Human powered hang glider | | 04/20/1983 | EP0076936A1 Air foil, in particular wing air foil for aircraft | | 02/13/1979 | US4139171 Articulated wing ornithopter | | 03/28/1978 | US4081155 Man-powered flying machine | | 10/11/1977 | US4053122 Flapping wing aircraft |
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