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发明名称
摘要
申请公布号
JPS5345306(B2)
申请公布日期
1978.12.05
申请号
JP19720079821
申请日期
1972.08.09
申请人
发明人
分类号
B21C25/02;F16J15/10
主分类号
B21C25/02
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代理人
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