Patent FR-1914-475890
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This French patent makes priority date reference to three Belgian filings, 1913-08-11, 1914-01-10, and 1914-03-30.
Sources
- Original patent document and bibliography entry on espacenet
- on google patents
- Inventor location: Constantin is located within département Seine, France, and d’Astanières within département Seine-et-Oise, France
| Year filed | 1914 |
|---|---|
| Year granted | 1915 |
| Office | FR |
| Patent number | 475890 |
| Inventors | Louis Constantin, François d’Astanières |
| Inventor country | FR |
| Applicant person | Louis Constantin, François d’Astanières |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | Yes |
| Original title | Perfectionnements relatifs à la stabilité longitudinale des aéroplanes |
| English title | Improvements to the longitudinal stability of airplanes |
| Tech fields | stability, airplane, design, elasticity, sustentation, fuselage, automatic stability |
| Filing date | 1914/08/01 |
| Full specification filed date | |
| Application number | 475890D |
| Grant date | 1915/04/03 |
| Granted? | Yes |
| Publication date | 1915/06/21 |
| Supplementary to patent | Patent BE-1913-08-11 Louis Constantin and François d’Astanières, Patent BE-1914-01-10 Louis Constantin and François d’Astanières, Patent BE-1914-266196 |
| Related to aircraft? | Yes |
| Serial number | |
| Patent agent | Hippolyte Josse |
| Assigned to | |
| National tech categories | FR 6.4 |
| IPCs | IPC B64C3/38 |
| CPCs | CPC B64C3/385 |
| Family year | 1913 |
| First filing? | No |
| Cites these patents | |
| Citations from after 1930 | |
| Application ID | 19293531 |
| INPADOC family ID | 5359185 |
| Number of text pages | 6 |
| Number of diagram pages | 1 |
| Number of figures | 11 |
| Number of claims | 7 |
