Patent DE-1918-321760

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Patent DE-1917-321760 original diagram


It seems that we have a date granted, on the original, and a date published, though not an application date, as such. There is not absolute consistency across the German documents we've examined. There is sometimes the articulation of three dates. 1918/03/16 is treated by Espacenet as the priority date for this patent.

This firm specialized in air-cushion shock-absorbers. “Luftfederung” translates as “air suspension”. It is more elaborately defined in German as “Federung von Kraftfahrzeugen, bei der Luft zur Dämpfung von Stößen eingesetzt wird”. This latter translates as “motor vehicle suspension that uses air to absorb shock”.

  • Inventor location: Berlin, Germany

Year filed
Year granted 1918
Office DE
Patent number 321760
Inventor country DE
Applicant person
Applicant firm Hofmannsche Luftfederung G.m.b.H.
Applicant type
Applicant is inventor? No
Original title Federung fuer Flugzeugfahrgestelle
English title Suspension for aircraft chassis
Tech fields Suspension, Chassis, Subsystem
Filing date 1918/03/16
Full specification filed date
Application number 321760D
Grant date 1918/03/16
Granted? Yes
Publication date 1920/06/14
Supplementary to patent
Related to aircraft? Yes
Serial number
Patent agent
Assigned to
National tech categories DE 77h.9
IPCs IPC B64C25/00
CPCs CPC B64F2700/6226, CPC B64C25/62
Family year 1918
First filing? No
Cites these patents
Citations from after 1930
Application ID 10619803
INPADOC family ID 10058747
Number of text pages 2
Number of diagram pages 1
Number of figures 8
Number of claims 3