Patent FR-1912-444426

This patent makes reference a Belgian the filing priority date 1911-05-20, and specifically to the Belgian patent number 235815. This specific numeric reference is quite rare.

Patent family descending from Patent BE-1911-235815

• Patent BE-1911-235815 (English title: Wing-valves for aeroplanes, Filing date: 1911-05-20, National tech categories: BE K)
• Patent FR-1912-444426 (English title: Wing-valves for aeroplanes, Supplementary to patent: Patent BE-1911-235815, Filing date: 1912-05-20, National tech categories: FR 6.4)

• Inventor location: Longsault, commune de Lères, Eure-et-Loir, France

Sources

• Aéro-Manuel, 1914 Répertoire Sportif Technique et Commercial de l'Aéronautique
• Original patent document and bibliography entry on espacenet
• Patent FR444426A on google patents

Year filed	1912
Year granted	1912
Office	FR
Patent number	444426
Inventors	Jean-Jérôme-Paul le Grand-Pétrot
Inventor country	FR
Inventor location	Eure-et-Loir
Applicant person	Jean-Jérôme-Paul le Grand-Pétrot
Applicant firm
Applicant type	INDIV
Applicant is inventor?	Yes
Original title	Ailettes-soupapes d'aéroplanes
English title	Wing-valves for aeroplanes
Tech fields	wings, airplane, valve, aerodynamics, design
Filing date	1912/05/20
Full specification filed date
Application number	444426D
Grant date	1912/08/07
Granted?	Yes
Publication date	1912/10/17
Supplementary to patent	Patent BE-1911-235815
Related to aircraft?	1
Serial number
Patent agent	None
Assigned to
National tech categories	FR 6.4
IPCs	IPC B64C21/08
CPCs	CPC B64C21/08, CPC Y02T50/10
Family year	1911
First filing?	No
Cites these patents
Citations from after 1930
Application ID	19262807
INPADOC family ID	5332881
Number of text pages	2
Number of diagram pages	1
Number of figures	6
Number of claims	1