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Patents > Office: HU & Inventor country: DE & First filing: None & Number of text pages: 1-2

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construction (11) · airship (11) · airplane (10) · subsystem (7) · design (7) · Propellers (6) · LTA (6) · frame (6) · Propulsion (4) · Biplane (4) · texture (4) · Aerodynamics (4) · motors (3)
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