Patent FR-1916-521764

This is an airplane-helicopter hybrid, perhaps explaining the use of the theoretically sound but not overly specific phrase “heavier-than-air”, rather late in the game.

Sources

• Original patent document and bibliography entry on espacenet
• Inventor location: département Seine, France

Patent family descending from Patent FR-1916-521764

• Patent FR-1916-521764 (English title: Improvements to aircraft which are heavier-than-air, actually an airplane-helicopter hybrid, National tech categories: FR 6.4)
• Patent FR-1916-521764.23807 (English title: Improvements to aircraft which are heavier-than-air, Supplementary to patent: Patent FR-1916-521764, National tech categories: FR 6.4)

Year filed	1916
Year granted	1921
Office	FR
Patent number	521764
Inventors
Inventor country	FR
Applicant person	Bine & Fils
Applicant firm
Applicant type	COMPANY
Applicant is inventor?	No
Original title	Perfectionnements aux appareils plus lourds que l'air pour la navigation aérienne
English title	Improvements to aircraft which are heavier-than-air, actually an airplane-helicopter hybrid
Tech fields	heavier-than-air, airplane, construction, frame, design, helicopter, hybrid, propellers, propulsion, ascension, sustentation
Filing date	1916/06/17
Full specification filed date
Application number	521764D
Grant date	1921/03/14
Granted?	Yes
Publication date	1921/07/19
Supplementary to patent
Related to aircraft?	Yes
Serial number
Patent agent	M. Zerolo
Assigned to
National tech categories	FR 6.4
IPCs	IPC B64C23/00
CPCs	CPC B64C23/005, CPC B64C2700/6274
Family year	1916
First filing?	Yes
Cites these patents
Citations from after 1930
Application ID	19338298
INPADOC family ID	5203162
Number of text pages	4
Number of diagram pages	3
Number of figures	5
Number of claims	5