Patent DE-1922-388401

Espacenet gives this patent the priority date 1922-06-09. We are giving it the filing date 1922-06-08, based on our notes found on patent dates, it seeming that "Patentirt im Deutschen Reiche vom" is exactly one day after the filing date. Often, we approach German patents by way international references, so the above differential is corroborated via the international relation.

Sources

• Original patent document and Bibliographic info at DPMA
• Original patent document and bibliography entry at espacenet
• Inventor location: Travemünde

Patent family descending from Patent DE-1922-388401

• Patent DE-1922-388401 (English title: Guidance surface for aircraft altitude control, Filing date: 1922-06-08, National tech categories: DE 77h.5)
• Patent DE-1922-390989 (English title: Guidance surface for aircraft altitude control, Supplementary to patent: Patent DE-1922-388401, Filing date: 1922-07-11, National tech categories: DE 77h.5)

Year filed	1922
Year granted	1924
Office	DE
Patent number	388401
Inventors	Ernst Heinkel
Inventor country	DE
Inventor location
Applicant person	Ernst Heinkel
Applicant firm
Applicant type	INDIV
Applicant is inventor?	1
Original title	Leitfläche für Hoehensteuer von Flugzeugen
English title	Guidance surface for aircraft altitude control
Tech fields	airplane, control, rudder
Filing date	1922-06-08
Full specification filed date
Application number
Grant date	1924-01-12
Granted?	1
Publication date	1924-01-12
Supplementary to patent
Related to aircraft?	1
Serial number
Patent agent
Assigned to
National tech categories	DE 77h.5
IPCs	IPC B64C9/02
CPCs	CPC B64C9/02
Family year	1922
First filing?
Cites these patents
Citations from after 1930
Application ID
INPADOC family ID
Number of text pages	2
Number of diagram pages	1
Number of figures	3
Number of claims	4