Patent FR-1915-502520
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This has the basic lay-out of an airplane, but with ascension-oriented propellers on the wings.
Sources
- Original patent document and bibliography entry on espacenet
- Inventor locations: Alexis Beurrier was located within département Charente-Inférieure, now département Charente-Maritime, France, Edmond Bigourdan was located within département Seine-et-Oise and Louis Lacoin was located within département Seine.
Patent family descending from Patent FR-1915-502520
- Patent FR-1915-502520 (English title: Improvements in Flying Machines with Revolving Wings, National tech categories: FR 6.4)
- Patent GB-1916-102154 (English title: Improvements in Flying Machines with Revolving Wings, Supplementary to patent: Patent FR-1915-502520)
- Patent FR-1916-502520.22245 (English title: Rotary wing aircraft, Supplementary to patent: Patent FR-1915-502520, National tech categories: FR 6.4)
| Year filed | 1915 |
|---|---|
| Year granted | 1920 |
| Office | FR |
| Patent number | 502520 |
| Inventors | Alexis Beurrier, Edmond Bigourdan, Louis Lacoin |
| Inventor country | FR |
| Applicant person | Alexis Beurrier, Edmond Bigourdan, Louis Lacoin |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | Yes |
| Original title | Avion à voilure tournante |
| English title | Improvements in Flying Machines with Revolving Wings |
| Tech fields | heavier-than-air, helicopter, hybrid, ascension, descent, propellers, airplane, braking |
| Filing date | 1915/11/06 |
| Full specification filed date | |
| Application number | 502520D |
| Grant date | 1920/02/24 |
| Granted? | Yes |
| Publication date | 1920/05/18 |
| Supplementary to patent | |
| Related to aircraft? | Yes |
| Serial number | |
| Patent agent | J. Fayollet |
| Assigned to | |
| National tech categories | FR 6.4 |
| IPCs | IPC B64C27/04 |
| CPCs | CPC B64C27/04, CPC B64C2700/6281 |
| Family year | 1915 |
| First filing? | Yes |
| Cites these patents | |
| Citations from after 1930 | |
| Application ID | 19319502 |
| INPADOC family ID | 548139 |
| Number of text pages | 3 |
| Number of diagram pages | 2 |
| Number of figures | 7 |
| Number of claims | 1 |
