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Patents > Year granted: 1919 & Office : AT or AU or MX & Grant date: 1910 - 1919 & First filing: Yes

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airplane (11) · biplane (4) · frame (4) · Design (4) · military (3) · propellers (3) · Construction (2) · wings (2) · Tragfläche (2) · HTA (2) · aerodynamics (2) · safety (2) · motor (2) · engine (2)
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Showing below up to 19 results in range #1 to #19.

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