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Patents > Office : AU or CH or GR & Applicant person: None & Filing date: 1910 - 1919

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airplane (16) · whole (13) · frame (13) · propulsion (8) · propeller (8) · heavier-than-air (7) · design (6) · helicopter (5) · wings (4) · Tragfläche (4) · subsystem (4) · stability (3) · safety (3) · motor (3) · marine (3)
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Showing below up to 37 results in range #1 to #37.

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