Patent FR-1912-444505

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Year filed 1912
Year granted 1912
Office FR
Patent number 444505
Inventors Ernest Bertin
Inventor country FR
Applicant person Ernest Bertin
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Hélicoptère parachute à stabilité automatique et à système moteur léger de puissance variable
English title helicopter parachute with automatic stability and light motor system of variable power
Tech fields parachute, helicopter, motors, propulsion, automatic stability, hybrid
Filing date 1912/05/25
Full specification filed date
Application number 444505D
Grant date 1912/08/09
Granted? Yes
Publication date 1912/10/19
Supplementary to patent
Related to aircraft? Yes
Serial number
Patent agent
Assigned to
National tech categories FR 6.4
IPCs IPC B64C11/00
CPCs CPC B64C11/00
Family year 1912
First filing? No
Cites these patents
Citations from after 1930
Application ID 19262886
INPADOC family ID 5332953
Number of text pages 6
Number of diagram pages 1
Number of figures 2
Number of claims 10