FR400894A - Système de propusion et de direction pour aéroplanes et, en général, pour tous appareils de navigation aérienne ou sous-marine
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Système de propusion et de direction pour aéroplanes et, en général, pour tous appareils de navigation aérienne ou sous-marine
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RAPHAEL GRAT JOSEPH LAVIGNE
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RAPHAEL GRAT JOSEPH LAVIGNE
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B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
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Aviation & Aerospace Engineering
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FR400894D1909-03-161909-03-16Système de propusion et de direction pour aéroplanes et, en général, pour tous appareils de navigation aérienne ou sous-marine
ExpiredFR400894A
(fr)