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Myers Guiding Apparatus for balloons . en Myers Guiding Apparatus for hydragen lighterthanair balloons google dq Guidingapparatusforballoons hl en sa ved ahUKEwjZiOLkifjKAhUEFzKHdcgCMQAEIHDAA Patent Office Carl Myers and Carlotta Myers other versions PDUSGov Aviation patents Balloon Farm
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