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发明名称
摘要
申请公布号
JPS4636717(Y1)
申请公布日期
1971.12.17
申请号
JP19690077752U
申请日期
1969.08.18
申请人
发明人
分类号
(IPC1-7):B24B45/00;B24D5/16
主分类号
(IPC1-7):B24B45/00
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