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发明名称
摘要
申请公布号	JPS4726694(U)	申请公布日期	1972.11.25
申请号	JP19710031058U	申请日期	1971.04.21
申请人		发明人
分类号	B24B21/16;(IPC1-7):B24B21/16	主分类号	B24B21/16
代理机构		代理人
主权项
地址

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