Patent US-1917-1350982
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- Tech class CPC B64C27/04: Helicopters
- Inventor location: all inventors are addressed 8 Rue François Millet, Paris ; this is the address we have more firmly for Louis Lacoin.
- Witnesses as shown on the final text page: Jules Fayollet and Chas. P. Pressly ; the former is very likely French patent agent J. Fayollet, who acted on behalf of these inventors, on this invention, when they filed it in France.[1] Chas. P. Pressly factors in prominently among witnesses.
Sources
- Patent 1350982 document and bibliographic info on espacenet
- Patent 1350982 at google patents
References
Year filed | 1917 |
---|---|
Year granted | 1920 |
Office | US |
Patent number | 1350982 |
Inventors | Alexis Beurrier, Édouard-Jean Bigourdan, Louis Lacoin |
Inventor country | FR |
Applicant person | Alexis Beurrier, Édouard-Jean Bigourdan, Louis Lacoin |
Applicant firm | |
Applicant type | INDIV |
Applicant is inventor? | Yes |
Original title | Flying-machine with revolving wings |
English title | Flying-machine with revolving wings |
Tech fields | helicopter |
Filing date | 1917/03/24 |
Full specification filed date | |
Application number | 15723617 |
Grant date | 1920/08/24 |
Granted? | Yes |
Publication date | |
Supplementary to patent | Patent FR-1915-502520 |
Related to aircraft? | 1 |
Serial number | 157236 |
Patent agent | |
Assigned to | |
National tech categories | USPC 416/115, USPC 416/159, USPC 416/130 |
IPCs | IPC B64C27/04, IPC B64C27/00 |
CPCs | CPC B64C2700/6281, CPC B64C27/04 |
Family year | 1917 |
First filing? | Yes |
Cites these patents | |
Citations from after 1930 | 7 |
Application ID | 48247395 |
INPADOC family ID | 43361479 |
Number of text pages | 3 |
Number of diagram pages | 4 |
Number of figures | 5 |
Number of claims | 3 |