• Patent Title: コアドリルおよびコアドリル装置
  • Application No.: JP2014174937
    Application Date: 2014-08-29
  • Publication No.: JP6453588B2
    Publication Date: 2019-01-16
  • Priority: JP2014174937 2014-08-29
  • Main IPC: B24D7/18
  • IPC: B24D7/18 B28D1/14
コアドリルおよびコアドリル装置
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