Charles Hasenfeld
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Charles Hasenfeld was an aero inventor, French, a civil engineer, Paris (12, place de la Bourse, Seine), on whom we have minimal information, though he contributed at least one highly-articulated innovation pertaining to the precise mechanisms of balloon propulsion and balloon navigation.
Patents whose inventor or applicant is Charles Hasenfeld
- Patent FR-1870-91005 (English title: balloon propelling and steering)