Patent FR-1915-523791

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Year filed 1915
Year granted 1921
Office FR
Patent number 523791
Inventors Marius Latour
Inventor country FR
Inventor location
Applicant person Marius Latour
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Perfectionnements à l'hélicoptère
English title Improvements to helicopters
Tech fields helicopter
Filing date 1915/05/12
Full specification filed date
Application number 523791D
Grant date 1921/04/29
Granted? Yes
Publication date 1921/08/25
Supplementary to patent
Related to aircraft? Yes
Serial number
Patent agent Eugene Testavin
Assigned to
National tech categories FR 6.4
IPCs IPC B64C27/46
CPCs CPC B64C27/46
Family year 1915
First filing? Yes
Cites these patents
Citations from after 1930
Application ID 19340274
INPADOC family ID 10316672
Number of text pages 3
Number of diagram pages 1
Number of figures 7
Number of claims 4