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发明名称
摘要
申请公布号
JPS5229245(B2)
申请公布日期
1977.08.01
申请号
JP19720000396
申请日期
1971.12.30
申请人
发明人
分类号
B22D11/16;B21B39/02;B22D11/12;G01B5/14;G01B5/16;(IPC1-7):B22D11/12
主分类号
B22D11/16
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