Patent FR-1849-7787.1
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- Inventor location: Graville, Seine-Inférieure (as known during the period upon which we are focused)
- Inventor occupation: mechanic
- Patent agent location: 24, rue d'Amsterdam, Paris
Sources
| Year filed | 1849 |
|---|---|
| Year granted | |
| Office | FR |
| Patent number | 7787.1 |
| Inventors | Charles Johnstone |
| Inventor country | FR |
| Inventor location | Graville, Graville-Lheure, Seine-Inférieure |
| Applicant person | |
| Applicant firm | |
| Applicant type | |
| Applicant is inventor? | Yes |
| Original title | Hélice propre à propulser les bateaux à vapeur |
| English title | steamship propeller blade |
| Tech fields | propulsion |
| Filing date | December 22, 1849 |
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| Granted? | Yes |
| Publication date | |
| Supplementary to patent | Patent FR-1849-7787 |
| Related to aircraft? | .5 |
| Serial number | |
| Patent agent | Austein |
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| Family year | 1849 |
| First filing? | No |
| Cites these patents | |
| Citations from after 1930 | |
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