Patent FR-1916-492896

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This original document makes reference to the Norwegian priority date 1915-12-15.

Sources


Year filed 1916
Year granted 1919
Office FR
Patent number 492896
Inventors Carl Alfred Johansson
Inventor country NO
Applicant person Carl Alfred Johansson
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Procédé pour la stabilisation automatique des aéroplanes
English title Automatic stabilization of airplanes
Tech fields airplane, stability, automatic stability
Filing date 1916/12/14
Full specification filed date
Application number 492896D
Grant date 1919/04/07
Granted? Yes
Publication date 1919/07/24
Supplementary to patent Patent NO-1915-12-15 Carl Alfred Johansson
Related to aircraft? Yes
Serial number
Patent agent Rigot et Prévost
Assigned to
National tech categories FR 6.4
IPCs IPC B64C17/00
CPCs CPC B64C2700/6214, CPC B64C17/00
Family year 1915
First filing? No
Cites these patents
Citations from after 1930
Application ID 19310097
INPADOC family ID 5373684
Number of text pages 3
Number of diagram pages 1
Number of figures 4
Number of claims 2