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Patents > Patent agent: H. Bœttcher fils & Family year: 1910 - 1919

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airplane (9) · stability (8) · propellers (6) · safety (6) · navigation (5) · design (5) · LTA (5) · construction (4) · None (4) · motors (4) · military (4) · hybrid (3) · parachutes (3) · propulsion (3) · rescue (3) · marine (3) · frame (3) · piloting (3) · balloon (3) · bombing (3)
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CPC B64D17/00 (4) · CPC B64C13/00 (3) · CPC B64B1/00 (3) · CPC B64C17/00 (3) · CPC B64D2700/62508 (2) · CPC B64C11/006 (2)
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Showing below up to 37 results in range #1 to #37.

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