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发明名称
摘要
申请公布号
JPS4863388(A)
申请公布日期
1973.09.03
申请号
JP19710098333
申请日期
1971.12.07
申请人
发明人
分类号
B21D28/34;B21D28/04;B23D33/10
主分类号
B21D28/34
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代理人
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地址
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