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发明名称
摘要
申请公布号
JPS5623237(U)
申请公布日期
1981.03.02
申请号
JP19790102714U
申请日期
1979.07.24
申请人
发明人
分类号
B21D51/08;F16K1/14;F16K5/06;(IPC1-7):B21D51/08
主分类号
B21D51/08
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代理人
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