Patent DE-1909-Wilcke-Graff

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Design for a two-part balloon, the upper part of which can detach and act as a parachute for landing.

The existence of this patent is inferred from Patent GB-1910-2479 and Patent FR-1910-412643.

Patents which are supplementary to this one


Year filed 1909
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Office DE
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Inventors Richard Wilcke, Albert Graff
Inventor country DE
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Applicant type INDIV
Applicant is inventor? 1
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Tech fields LTA, balloon, navigation, valve, parachute, landing
Filing date 1909-02-02
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Supplementary to patent
Related to aircraft? 1
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Cites these patents
Citations from after 1930
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