Patent FR-1872-94319
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- This is connected to an English patent dated to expire on 28 August 1885. That is, it is supplementary to a British patent filed 1871-08-28.
- Patent agent location: 18, rue de la Chaussée-d'Antin, Paris
Sources
- CdB (pertinent to the year 1872)
- Bibliographic record of this patent at archives.inpi.fr
| Year filed | 1872 |
|---|---|
| Year granted | |
| Office | FR |
| Patent number | 94319 |
| Inventors | Hermann Hirsch |
| Inventor country | |
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| Applicant person | |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | 1 |
| Original title | Perfecionnements aux hélices propulseurs |
| English title | Improvements in propulsive helices |
| Tech fields | propeller, propulsion |
| Filing date | 1872-02-27 |
| Full specification filed date | |
| Application number | |
| Grant date | |
| Granted? | 1 |
| Publication date | |
| Supplementary to patent | Patent GB-1871-08-28 Hermann Hirsch |
| Related to aircraft? | 0.5 |
| Serial number | |
| Patent agent | Bonneville |
| Assigned to | |
| National tech categories | FR 6.3? |
| IPCs | |
| CPCs | |
| Family year | 1871 |
| First filing? | No |
| Cites these patents | |
| Citations from after 1930 | |
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