Dropping, ejecting, releasing or receiving articles, liquids, or the like, in flight (refuelling during flight B64D39/00; launching apparatus for projecting projectiles or missiles F41F1/00, F41F7/00; rocket or torpedo launchers F41F3/00; weapon sights or aiming F41G)

Child Classifications

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• B64D 1/02 Dropping, ejecting, or releasing articles (jettisonable fuel reservoirs B64D37/12)
• B64D 1/16 Dropping or releasing powdered, liquid, or gaseous matter, e.g. for fire-fighting (jettisoning fuel B64D37/26)
• B64D 1/22 Taking-up articles from earth's surface