Patent FR-1907-369937.8219

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1st addition to Patent FR-1906-369937; surface previously envisioned as elliptical can also be diamond-shaped.


  • {{esp|FR|8219E espacenet]
  • Inventor location: France (Seine)
Year filed
Year granted 1907
Office FR
Patent number 8219
Inventors Antoine-Padoue Filippi
Inventor country FR
Applicant person Antoine-Padoue Filippi
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Perfectionnements à une surface d'ascension applicable aux appareils destinés à pouvoir s'élever, se soutenir et se diriger dans l'air
English title Improvements in a lift surface applicable to craft having the ability to lift, sustain, and direct themselves in the air
Tech fields texture, propulsion, navigation, airfoil
Filing date September 21, 1907
Full specification filed date
Application number 8219D
Grant date December 3, 1907
Granted? Yes
Publication date February 8, 1908
Supplementary to patent Patent FR-1906-369937
Related to aircraft? Yes
Serial number
Patent agent Dom. Casalonga
Assigned to
National tech categories FR 6.4
IPCs IPC B64C11/00
CPCs CPC B64C11/007
Family year 1906
First filing? No
Number of citations
Cited by
Application ID 18677945
INPADOC family ID 5192185
Number of text pages 1
Number of diagram pages 1
Number of figures 2
Number of claims