Patent FR-1911-428809

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Movable wing elements described as improvements on the concept of ailerons.

  • Inventor location: Egypt


Year filed 1910
Year granted 1911
Office FR
Patent number 428809
Inventors Oswald François Leopold Keun
Inventor country EG
Applicant person
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Dispositif d'équilibrage latéral et de variation de puissance sustenatrice pour aéroplanes
English title System for lateral stability and variation of sustaining power for airplanes
Tech fields airplane, propulsion, stability, frame, airfoil, aileron, takeoff, landing, piloting
Filing date June 29, 1910
Full specification filed date
Application number 428809D
Grant date June 30, 1911
Granted? Yes
Publication date September 8, 1911
Supplementary to patent
Related to aircraft? Yes
Serial number
Patent agent Charles Dony
Assigned to
National tech categories FR 6.4
CPCs CPC B64C3/54
Family year 1910
First filing? No
Cites these patents
Citations from after 1930
Application ID 19247519
INPADOC family ID 5319915
Number of text pages 3
Number of diagram pages 1
Number of figures 3
Number of claims 5