Patent US-1917-1350982

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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