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Helene G. McArdle

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  • Norristown, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Semi-articulated rotor system
    • Patent number 6,050,778
    • Issue date Apr 18, 2000
    • The Boeing Company
    • Francis H. McArdle
    • B64 - AIRCRAFT AVIATION COSMONAUTICS