Patent FR-1919-506522
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- Tech class CPC B64C11/48: Units of two or more coaxial propellers
Sources
- Original patent document and bibliography entry on espacenet
- on google patents
| Year filed | 1919 |
|---|---|
| Year granted | 1920 |
| Office | FR |
| Patent number | 506522 |
| Inventors | Hermann Faehrmann |
| Inventor country | US |
| Applicant person | Hermann Faehrmann |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | 1 |
| Original title | Perfectionnements aux hélices et à divers dispositifs relatifs aux hélices |
| English title | Improvements to propellers and various devices relating to propellers |
| Tech fields | propellers |
| Filing date | 1919-11-25 |
| Full specification filed date | |
| Application number | |
| Grant date | 1920-05-31 |
| Granted? | 1 |
| Publication date | 1920-08-24 |
| Supplementary to patent | |
| Related to aircraft? | 1 |
| Serial number | |
| Patent agent | Émile Bert |
| Assigned to | |
| National tech categories | FR 6.4 |
| IPCs | IPC B64C11/48 |
| CPCs | CPC B64C11/48 |
| Family year | 1919 |
| First filing? | 1 |
| Cites these patents | |
| Citations from after 1930 | 0 |
| Application ID | |
| INPADOC family ID | |
| Number of text pages | 5 |
| Number of diagram pages | 1 |
| Number of figures | 19 |
| Number of claims | 1 |
