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Patents > Inventor country: DE & Applicant is inventor: Yes & Number of diagram pages: 4-7

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propulsion (7) · stability (6) · LTA (6) · Airplane (5) · frame (5) · control (5) · subsystem (4) · navigation (3) · balloon (3) · hybrid (3) · car (3) · propeller (2) · propellers (2) · safety (2) · flapping (2) · steering (2) · petroleum (2) · bamboo (2) · whole (2) · wings (2)
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