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Patents > Office : DE or UN & Applicant person: None & Related to aircraft: 1 & National tech categories: DE 77

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LTA (18) · balloon (9) · navigation (6) · car (5) · propulsion (5) · electricity (4) · propeller (4) · captive (4) · gas (3) · kite (3) · stability (3) · suspension (3) · hydrogen (2) · safety (2) · frame (2) · ascension (2) · rocket (2) · parachute (2) · piloting (2)
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