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发明名称
摘要
申请公布号
JPS491988(U)
申请公布日期
1974.01.09
申请号
JP19720040977U
申请日期
1972.04.07
申请人
发明人
分类号
B24C5/04;B24C5/02;(IPC1-7):B24C5/02
主分类号
B24C5/04
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代理人
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