Drilldown: Patents

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Patents > Year filed: 1904 & Office : DE or FR & Applicant firm : Société anonyme Astra AB or None & Family year: 1900 - 1999 & First filing: No & Citations from after 1930: None

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LTA (9) · airplane (7) · propulsion (6) · stability (6) · navigation (5) · Hybrid (4) · Frame (4) · balloon (3) · ascension (3) · wings (3) · balloons (3) · Lift (3) · nervure (2) · rudder (2) · safety (2) · Parachute (2) · heavier-than-air (2) · flapping (2) · design (2) · construction (2)
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Showing below up to 26 results in range #1 to #26.

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