Patent FR-1910-417989.13504
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This is the first addition to Patent FR-1910-417989, which brevet was filed 1910-06-25.
Sources
- Original patent document and bibliography entry on espacenet
- Inventor location: département Charente-Inférieure, France
Year filed | 1910 |
---|---|
Year granted | 1911 |
Office | FR |
Patent number | 13504 |
Inventors | Édouard-Jean Bigourdan |
Inventor country | FR |
Applicant person | Édouard-Jean Bigourdan |
Applicant firm | |
Applicant type | INDIV |
Applicant is inventor? | Yes |
Original title | Biplan concentrique à mouvements contraires |
English title | Concentric biplane with contrary movements, actually a helicopter, featuring two counter-rotating blades, or sets of blades |
Tech fields | design, cables, propellers, helicopter |
Filing date | 1910/12/03 |
Full specification filed date | |
Application number | 13504D |
Grant date | 1911/02/13 |
Granted? | Yes |
Publication date | 1911/04/29 |
Supplementary to patent | Patent FR-1910-417989 |
Related to aircraft? | Yes |
Serial number | |
Patent agent | de Bongé |
Assigned to | |
National tech categories | FR 6.4 |
IPCs | IPC B64C11/00 |
CPCs | CPC B64C11/005 |
Family year | 1910 |
First filing? | No |
Cites these patents | |
Citations from after 1930 | |
Application ID | 18723809 |
INPADOC family ID | 5198345 |
Number of text pages | 2 |
Number of diagram pages | 1 |
Number of figures | 2 |
Number of claims | 1 |