Patent FR-1913-423792.18642
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This is the fourth addition to Patent FR-1910-423792, filed 1910-12-17. It enumerates the preceding Patent FR-1911-423792.14664 and Patent FR-1912-423792.16610 and Patent FR-1913-423792.17303. This fourth addition puts some emphasis on the material specifics as opposed to the concept of the invention.
- Inventor location: département Seine, France
Sources
- Original patent document and bibliography entry on espacenet
- on google patents
| Year filed | 1913 |
|---|---|
| Year granted | 1914 |
| Office | FR |
| Patent number | 18642 |
| Inventors | André-Julien Mahoudeau |
| Inventor country | FR |
| Applicant person | André-Julien Mahoudeau dit de Villethiou |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | Yes |
| Original title | Hélice à centre libre |
| English title | Propeller with free center |
| Tech fields | Propellers, Propulsion, Design, Metal, Construction |
| Filing date | 1913/12/11 |
| Full specification filed date | |
| Application number | 18642D |
| Grant date | 1914/03/10 |
| Granted? | Yes |
| Publication date | 1914/05/27 |
| Supplementary to patent | Patent FR-1910-423792 |
| Related to aircraft? | Yes |
| Serial number | |
| Patent agent | Paul Coulomb |
| Assigned to | |
| National tech categories | FR 6.2 |
| IPCs | IPC B63H1/12 |
| CPCs | CPC B64C11/006, CPC B63H2001/344 |
| Family year | 1910 |
| First filing? | No |
| Cites these patents | |
| Citations from after 1930 | |
| Application ID | 18729753 |
| INPADOC family ID | 5199040 |
| Number of text pages | 2 |
| Number of diagram pages | 1 |
| Number of figures | 2 |
| Number of claims | 2 |
