Patent FR-1911-426729

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Year filed 1911
Year granted 1911
Office FR
Patent number 426729
Inventors Stephan de Ostchewsky-Krouglik
Inventor country FR
Applicant person Stephan de Ostchewsky-Krouglik
Applicant firm Société Louis Dreyfus et Cie
Applicant type COMPANY
Applicant is inventor? 1
Original title Surface portante convenant particulièrement aux hélices
English title Airfoil particularly suitable for propellers
Tech fields airfoil, propeller blade, aerial propeller
Filing date 1911-03-02
Full specification filed date
Application number 426729D
Grant date 1911-07-17
Granted? 1
Publication date
Supplementary to patent
Related to aircraft? 1
Serial number
Patent agent Hippolyte Josse
Assigned to
National tech categories
IPCs IPC B64C11/16
CPCs CPC B64C11/16
Family year 1911
First filing? 1
Cites these patents
Citations from after 1930
Application ID 19245478
INPADOC family ID 5318177
Number of text pages 3
Number of diagram pages 1
Number of figures 9
Number of claims 1