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.
Sources
- Original patent document and bibliography entry on espacenet
Patent family descending from Patent ES-1923-84420
- Patent ES-1923-84420 (English title: Metal hub bonding apparatus of wooden propeller blades)
Year filed | 1923 |
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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 |
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Grant date | 1923-05-16 |
Granted? | |
Publication date | 1923-05-16 |
Supplementary to patent | |
Related to aircraft? | 1 |
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Family year | 1923 |
First filing? | 0 |
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Citations from after 1930 | |
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