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Patents > Supplementary to patent: None & National tech categories: DE 77 & Number of figures: 4-6

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Raphael Ernst May (2)
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LTA (16) · propulsion (13) · navigation (9) · car (5) · frame (5) · propeller (4) · dirigible (4) · control (4) · None (3) · ornithopter (3) · design (3) · stability (3) · balloon (3) · airship (3) · kite (3) · steering (3)
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