Patent DE-1910-221509

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Vent for a balloon with rubber ring and one or more springs.

Patents which are supplementary to this one


Year filed 1909
Year granted 1910
Office DE
Patent number 221509
Inventor country DE, AT
Applicant person
Applicant firm Vereinigte Gummiwaaren-Fabriken Harburg-Wien
Applicant type COMPANY
Applicant is inventor?
Original title Federndes Ballonventil
English title Balloon vent with springs
Tech fields LTA, balloon, vent, valve, springs
Filing date 1909-06-08
Full specification filed date
Application number
Grant date
Granted? 1
Publication date 1910-05-02
Supplementary to patent
Related to aircraft? 1
Serial number
Patent agent
Assigned to
National tech categories DE 77h.4
CPCs CPC B64B1/64
Family year
First filing?
Cites these patents
Citations from after 1930
Application ID
Number of text pages 2
Number of diagram pages 1
Number of figures 2
Number of claims 2