Patent DE-1884-28934

• Inventor location: Leipzig

Lilienthal Museum, and therefore earlier spreadsheet record, had this title: als doppelwirkendes Steuer dienende Schraubenwelle, meaning "double acting control screw shaft". Based on the original doc, that just isn't the title.

Patent family descending from Patent DE-1883-26930

• Patent DE-1883-26930 (English title: Airship with steering apparatus, National tech categories: DE 77)
• Patent GB-1884-2469 (English title: Navigable balloons, Supplementary to patent: Patent DE-1883-26930, National tech categories: GB with buoyant • GB 4 aërostats • GB 4 propel & steer)
• Patent DE-1884-28934 (English title: Steerable airship, Supplementary to patent: Patent DE-1883-26930, National tech categories: DE 77)
• Patent US-1884-354413 (English title: Balloon, Supplementary to patent: Patent DE-1883-26930, National tech categories: USPC 244/51)

Sources

• Lilienthal museum patents
• Original patent document and Bibliographic info at DPMA
• Original patent document and bibliography entry at espacenet

Year filed	1884
Year granted	1884
Office	DE
Patent number	28934
Inventors	Otto Hartung
Inventor country	DE
Inventor location	Leipzig
Applicant person	Otto Hartung
Applicant firm
Applicant type	INDIV
Applicant is inventor?	1
Original title	Luftschiff mit Lenkvorrichtung
English title	Steerable airship
Tech fields	LTA, Aerial navigation
Filing date	February 13, 1884
Full specification filed date
Application number
Grant date	October 10, 1884
Granted?	1
Publication date
Supplementary to patent	Patent DE-1883-26930
Related to aircraft?	1
Serial number
Patent agent
Assigned to
National tech categories	DE 77
IPCs	IPC B64C23/00
CPCs	CPC B64C23/005, CPC B64C2700/6273
Family year	1883
First filing?	No
Cites these patents
Citations from after 1930
Application ID
INPADOC family ID	9323622
Number of text pages	2
Number of diagram pages	1
Number of figures	4
Number of claims	3