Patent ES-1923-84420

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Taking the date 1923-02-14, alleged priority date data, as this patent's filing date in Spain, is a judgement call based on experience with Spanish material on Espacenet, as is taking publication date data 1923-05-16 found on this patent's Bibliographic data page as this patent's date granted. As usual regarding Spanish patent data found via espacenet, we have little to work with and are interested in international aggregation.

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Patent family descending from Patent ES-1923-84420


Year filed 1923
Year granted 1923
Office ES
Patent number 84420
Inventors Pierre Levasseur
Inventor country FR
Applicant person Pierre Levasseur
Applicant firm
Applicant type INDIV
Applicant is inventor? 1
Original title Aparato de unión con cubo metálico de las palas de hélice de madera
English title Metal hub bonding apparatus of wooden propeller blades
Tech fields Propellers, Design, Construction, Metallurgy, Wood
Filing date 1923-02-14
Full specification filed date
Application number
Grant date 1923-05-16
Granted?
Publication date 1923-05-16
Supplementary to patent
Related to aircraft? 1
Serial number
Patent agent
Assigned to
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IPCs
CPCs
Family year 1923
First filing? 0
Cites these patents
Citations from after 1930
Application ID
INPADOC family ID
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