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发明名称
摘要
申请公布号
JPS599770(Y2)
申请公布日期
1984.03.28
申请号
JP19800022981U
申请日期
1980.02.23
申请人
发明人
分类号
B23B31/20;B23B31/02;(IPC1-7):B23B31/20
主分类号
B23B31/20
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