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发明名称
摘要
申请公布号
JPS447059(Y1)
申请公布日期
1969.03.17
申请号
JP19660045424U
申请日期
1966.05.16
申请人
发明人
分类号
B21C47/20;B23K9/12;B23K35/00;B23K37/00;(IPC1-7):B21C47/20
主分类号
B21C47/20
代理机构
代理人
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