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发明名称
摘要
申请公布号
JPS5427133(U)
申请公布日期
1979.02.22
申请号
JP19770099891U
申请日期
1977.07.26
申请人
发明人
分类号
B21B31/32;B21B13/02;(IPC1-7):B21B31/32
主分类号
B21B31/32
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