Patent GB-1912-13882
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This is explicitly a patent of addition, within the British system. It is an addition to Patent GB-1911-14926, which parent patent was filed 1916-06-25. The British parent patent makes priority date reference to Patent FR-1910-417989. There is likely a French addition analogous to this British.
It is a form of helicopter, possibly with large overlapping blades.
- Inventor location: Charente-Inférieure, France
- Inventor occupation: Engineer
Sources
- Original patent document and bibliography entry on espacenet
- on google patents
| Year filed | 1912 |
|---|---|
| Year granted | 1913 |
| Office | GB |
| Patent number | 13882 |
| Inventors | Édouard-Jean Bigourdan |
| Inventor country | FR |
| Applicant person | Édouard-Jean Bigourdan |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | Yes |
| Original title | Improvements relating to Helicopter Flying Machines |
| English title | Improvements relating to Helicopter Flying Machines |
| Tech fields | helicopter, HTA |
| Filing date | 1912/06/13 |
| Full specification filed date | |
| Application number | 191213882D |
| Grant date | 1913/02/06 |
| Granted? | Yes |
| Publication date | |
| Supplementary to patent | Patent GB-1911-14926, Patent FR-1910-417989 |
| Related to aircraft? | 1 |
| Serial number | |
| Patent agent | Mathys & Co. |
| Assigned to | |
| National tech categories | |
| IPCs | IPC B64C11/00 |
| CPCs | CPC B64C11/007, CPC B64C11/005 |
| Family year | 1910 |
| First filing? | No |
| Cites these patents | |
| Citations from after 1930 | |
| Application ID | 23635099 |
| INPADOC family ID | 11108916 |
| Number of text pages | 2 |
| Number of diagram pages | 1 |
| Number of figures | 3 |
| Number of claims | 3 |
