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Patents > Patent agent : Armengaud jeune or Watson E. Coleman & IPCs: None

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airplane (10) · propulsion (9) · navigation (8) · propeller (7) · Frame (7) · stability (6) · construction (6) · LTA (5) · dirigible (4) · balloon (4) · airfoil (4) · propellers (3) · possibly flapping (3) · sail (3) · safety (3) · aerostat (3)
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Showing below up to 43 results in range #1 to #43.

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