Patent FR-1915-476300.20754

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This is a per se certificat d'addition to brevet Patent FR-1914-476300‎‎.

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Patent family descending from Patent FR-1915-476300.20754


Year filed 1915
Year granted 1919
Office FR
Patent number 20754
Inventors Louis-Isidore Henry
Inventor country FR
Applicant person Louis-Isidore Henry
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Dispositif de stabilisation automatique pour aéroplanes et appareils similaires
English title Automatic airplane stability apparatus
Tech fields airplane, stability, pendulum, automatic stability
Filing date 1915/06/02
Full specification filed date
Application number 20754D
Grant date 1919/02/08
Granted? Yes
Publication date 1919/06/14
Supplementary to patent Patent FR-1914-476300‎‎
Related to aircraft? Yes
Serial number
Patent agent T. Damas
Assigned to
National tech categories FR 6.4
IPCs IPC B64C17/00
CPCs CPC B64C17/00, CPC B64C2700/6212
Family year 1914
First filing? No
Cites these patents
Citations from after 1930
Application ID 18731821
INPADOC family ID 5202782
Number of text pages 4
Number of diagram pages 1
Number of figures 10
Number of claims 2