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发明名称
摘要
申请公布号
JPH02122707(U)
申请公布日期
1990.10.09
申请号
JP19890030371U
申请日期
1989.03.16
申请人
发明人
分类号
B23B31/107;B23B31/02;B23B31/117;(IPC1-7):B23B31/117
主分类号
B23B31/107
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