Patent FR-1908-404631
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The presence of this patent on Espacenet is extraordinarly patchy, though it does appear, with quite minimal bibliographic data, by way of a basic patent number search. The minimal data does check out and comport with the leads we have, in context. Other data is inferred by way of the addition Patent FR-1909-404631.12136 and particularly by way of Patent FR-1909-412306, which latter makes specific reference to this patent's filing date. National tech category FR 6.2 is a matter of extreme likelihood.
Sources
- Original patent document and bibliography entry on espacenet
Patent family descending from Patent FR-1908-404631
- Patent FR-1908-404631 (National tech categories: FR 6.2)
- Patent GB-1908-27771 (English title: Improvements in and relating to Propellers, Supplementary to patent: Patent FR-1908-404631)
- Patent HU-1908-50412 (English title: Airship Propellers, Supplementary to patent: Patent FR-1908-404631, National tech categories: HU V/h)
- Patent FR-1909-404631.12136 (English title: Propeller and apparatus therein comporting its application, Supplementary to patent: Patent FR-1908-404631, National tech categories: FR 6.2)
- Patent FR-1909-412306 (English title: Improvements brough to propellers with double effect of the "blade" variety, Supplementary to patent: Patent FR-1908-404631 • Patent FR-1909-404631.12136, National tech categories: FR 6.2)
| Year filed | 1908 |
|---|---|
| Year granted | 1909 |
| Office | FR |
| Patent number | 404631 |
| Inventors | Gabriel Babillot |
| Inventor country | FR |
| Applicant person | Gabriel Babillot |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | 1 |
| Original title | |
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| Tech fields | |
| Filing date | 1908-10-24 |
| Full specification filed date | |
| Application number | |
| Grant date | |
| Granted? | |
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| Supplementary to patent | |
| Related to aircraft? | 1 |
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| National tech categories | FR 6.2 |
| IPCs | IPC B63H1/04 |
| CPCs | CPC B63H1/04 |
| Family year | 1908 |
| First filing? | 1 |
| Cites these patents | |
| Citations from after 1930 | |
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