Patent FR-1869-86777.1
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As usual, in the cases of additions, relative to parent patents, this early, though archives.inpi.fr usually has multiple entries, they are "redundant", in the sense that the number of page images are the same on all the appropriate entries, the gestalt being one large document.
- Brevet d'invention de 15 ans ; 1 addition
- Inventor location: Paris (116, rue Neuve-des-Mathurins, Seine)
Sources
| Year filed | 1869 |
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| Year granted | |
| Office | FR |
| Patent number | 86777 |
| Inventors | Charles de Birague |
| Inventor country | FR |
| Inventor location | Paris, Seine |
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| Original title | machine hydro-aérienne |
| English title | Hydro-aerial machine |
| Tech fields | hybrid, marine, LTA |
| Filing date | 1869-10-16 |
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| Supplementary to patent | Patent FR-1869-86777 |
| Related to aircraft? | Yes |
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| National tech categories | FR 2 |
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| Citations from after 1930 | |
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