Patent FR-1839-7546

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Year filed 1839
Year granted 1839
Office FR
Patent number 7546
Inventors Eugène-Louis-Jules DE FRESNE
Inventor country FR
Applicant person
Applicant firm
Applicant type
Applicant is inventor? 1
Original title moteur atmosphérique propre à la direction des aérostats et à la navigation
English title atmospheric motor aiding in the direction and navigation of dirigibles
Tech fields Navigation, propulsion, LTA
Filing date 1839-03-26
Full specification filed date
Application number
Grant date 1839-09-19
Granted? 1
Publication date
Supplementary to patent
Related to aircraft? Yes
Serial number
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Assigned to
National tech categories FR 6.4
IPCs
CPCs
Family year 1839
First filing?
Cites these patents
Citations from after 1930
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