Drilldown: Patents

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Patents > Office : DE or GR & Family year: 1890 - 1899 & Number of figures: 6-40

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LTA (13) · propulsion (10) · None (6) · navigation (5) · frame (5) · propeller (4) · airship (3) · car (3) · stability (3) · balloon (2) · control (2) · design (2) · ornithopter (2) · kite (2)
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Showing below up to 32 results in range #1 to #32.

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