Patent FR-1907-380581
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This patent makes priority date reference to a Belgian predecessor filed 1906-12-18.
Sources
- Original patent document and bibliography entry on espacenet
- on google patents
- Inventor location: Belgium
Patent family descending from Patent FR-1907-380581
- Patent FR-1907-380581 (English title: Two-propeller helicopter or airplane, Supplementary to patent: Patent BE-1906-12-18 Émile Dupont, National tech categories: FR 6.4)
- Patent FR-1909-380581.10732 (English title: Supplement to patent of Aug 6, 1907 for airplanes or helicopters with two propellers, Supplementary to patent: Patent FR-1907-380581, National tech categories: FR 6.4)
Year filed | 1907 |
---|---|
Year granted | 1907 |
Office | FR |
Patent number | 380581 |
Inventors | Émile Dupont |
Inventor country | BE |
Inventor location | |
Applicant person | Émile Dupont |
Applicant firm | |
Applicant type | INDIV |
Applicant is inventor? | Yes |
Original title | Hélicoptère ou aéroplane à deux hélices |
English title | Two-propeller helicopter or airplane |
Tech fields | Propellers, Propulsion, Airplane, Helicopter |
Filing date | 1907/08/06 |
Full specification filed date | |
Application number | 380581D |
Grant date | 1907/10/11 |
Granted? | Yes |
Publication date | 1907/12/12 |
Supplementary to patent | Patent BE-1906-12-18 Émile Dupont |
Related to aircraft? | Yes |
Serial number | |
Patent agent | Ch. Faber |
Assigned to | |
National tech categories | FR 6.4 |
IPCs | IPC B64C27/04, IPC B64C3/52 |
CPCs | CPC B64C2700/6281, CPC B64C27/04 |
Family year | 1906 |
First filing? | No |
Cites these patents | |
Citations from after 1930 | |
Application ID | 19200370 |
INPADOC family ID | 5281734 |
Number of text pages | 5 |
Number of diagram pages | 3 |
Number of figures | 31 |
Number of claims | 8 |