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
- Patent DK-1910-14006 (English title: Airship, Filing date: 1910-01-29)
- Patent FR-1910-412643 (English title: Air-ship, Filing date: 1910-01-31)
- Patent ES-1910-47275 (English title: Airship, Filing date: 1910-02-01)
- Patent HU-1910-52530 (English title: Airship, Filing date: 1910-01-24)
- Patent GB-1910-2479 (English title: Airship, Filing date: 1910-02-01)
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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Related to aircraft? | 1 |
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