Patent FR-1916-478440.20391
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This is the first addition to Patent FR-1915-478440, which brevet was filed 1915-04-19.
Sources
- Original patent document and bibliography entry on espacenet
- Inventor location: Daumsenil 48, Paris, département Seine, France
Year filed | 1916 |
---|---|
Year granted | 1917 |
Office | FR |
Patent number | 20391 |
Inventors | Edmond-Louis Douhéret |
Inventor country | FR |
Applicant person | Edmond-Louis Douhéret |
Applicant firm | |
Applicant type | INDIV |
Applicant is inventor? | Yes |
Original title | Machine volante hélicoplane |
English title | Helicoplane flying machine |
Tech fields | hybrid, helicoplane |
Filing date | 1916/12/21 |
Full specification filed date | |
Application number | 20391D |
Grant date | 1917/09/08 |
Granted? | Yes |
Publication date | 1917/11/28 |
Supplementary to patent | Patent FR-1915-478440 |
Related to aircraft? | Yes |
Serial number | |
Patent agent | None |
Assigned to | |
National tech categories | FR 6.4 |
IPCs | IPC B64C27/04 |
CPCs | CPC B64C2700/6281, CPC B64C27/04 |
Family year | 1915 |
First filing? | No |
Cites these patents | |
Citations from after 1930 | |
Application ID | 18731467 |
INPADOC family ID | 5202552 |
Number of text pages | 3 |
Number of diagram pages | 1 |
Number of figures | 3 |
Number of claims | 1 |