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发明名称
摘要
申请公布号
JPH0285516(U)
申请公布日期
1990.07.05
申请号
JP19880165462U
申请日期
1988.12.21
申请人
发明人
分类号
B23B31/20;(IPC1-7):B23B31/20
主分类号
B23B31/20
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代理人
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