Patent FR-1912-442539

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Year filed 1912
Year granted 1912
Office FR
Patent number 442539
Inventors Belton Tattnall Hamilton
Inventor country GB
Applicant person Belton Tattnall Hamilton
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Perfectionnements aux hélices
English title Improvements to propellers
Tech fields propellers, aerodynamics, design, incidence
Filing date 1912/04/13
Full specification filed date
Application number 442539D
Grant date 1912/06/22
Granted? Yes
Publication date 1912/09/03
Supplementary to patent
Related to aircraft? Yes
Serial number
Patent agent E. Blétry
Assigned to
National tech categories FR 6.4
IPCs IPC B64C11/18
CPCs CPC B64C11/18
Family year 1912
First filing? No
Cites these patents
Citations from after 1930
Application ID 19260965
INPADOC family ID 5331307
Number of text pages 3
Number of diagram pages 1
Number of figures 7
Number of claims 4