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AT91640B
Expired / Lapsed
AT
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Hang gliders with coaxially aligned, cylindrical wings and damping surfaces.
Assignee: Viktor Hoenigmann
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Filing: 1918-05-12
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Granted: 1923-03-10
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Expires: 1938-05-12
Abstract
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Inventors
- 👤 Viktor Hoenigmann
Bibliographic Details
Application Number
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Jurisdiction
AT
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google_patents
Last Synchronized
2026-11-05 13:32
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