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发明名称
摘要
申请公布号
JPS4711725(Y1)
申请公布日期
1972.05.01
申请号
JP19660087791U
申请日期
1966.09.16
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发明人
分类号
(IPC1-7):B21K1/48
主分类号
(IPC1-7):B21K1/48
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