Patent FR-1912-443843

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Year filed 1912
Year granted 1912
Office FR
Patent number 443843
Inventors Alexandre Liwentaal
Inventor country FR
Applicant person Liwentaal ALEXANDER
Applicant firm
Applicant type INDIV
Applicant is inventor? 1
Original title perfectionnements apportés aux propulseurs ou hélices et organes analogues
English title refinements brought to propellers or blades and similar apparatus
Tech fields Propulsion
Filing date 1912-05-15
Full specification filed date
Application number 443843D
Grant date 1912-10-03
Granted? 1
Publication date
Supplementary to patent
Related to aircraft? Yes
Serial number
Patent agent
Assigned to
National tech categories FR 6.4
IPCs IPC B64C11/16
CPCs CPC B64C11/16
Family year 1912
First filing? 0
Cites these patents
Citations from after 1930
Application ID 19262238
INPADOC family ID 5332395
Number of text pages
Number of diagram pages
Number of figures
Number of claims

Sources