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公开(公告)号:US3142140A
公开(公告)日:1964-07-28
申请号:US10392861
申请日:1961-04-18
Applicant: AGENCY IND SCIENCE TECHN
Inventor: YASUHIRO ISHIDA
IPC: B24B13/00
CPC classification number: B24B13/00
公开(公告)号:US3142140A
公开(公告)日:1964-07-28
申请号:US10392861
申请日:1961-04-18
Applicant: AGENCY IND SCIENCE TECHN
Inventor: YASUHIRO ISHIDA
IPC: B24B13/00
CPC classification number: B24B13/00