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发明名称
摘要
申请公布号
JPS5291628(U)
申请公布日期
1977.07.08
申请号
JP19750180143U
申请日期
1975.12.29
申请人
发明人
分类号
E04G21/16;B21F7/00;B21F15/04;E04G21/00;(IPC1-7):E04G21/16
主分类号
E04G21/16
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