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摘要
申请公布号
JPS5231695(Y2)
申请公布日期
1977.07.19
申请号
JP19720009327U
申请日期
1972.01.20
申请人
发明人
分类号
B21D1/00;B21B39/02;B21B39/08;B21D1/02;B22D11/12;B22D11/128;(IPC1-7):B22D11/12
主分类号
B21D1/00
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代理人
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