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  • Publication Date: January 13, 1988
  • Publication Number: JP-S631349-Y2

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    Patent Citations (2)

      Publication numberPublication dateAssigneeTitle
      JP-S5448218-AApril 16, 1979Zenon Gakufu ShiyutsupanshiyaWoodwind
      JP-S5533178-AMarch 08, 1980Takamura ToyamaAcoustic hole device for plastic flute

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