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发明名称
摘要
申请公布号
JPS5139293(B2)
申请公布日期
1976.10.27
申请号
JP19720045961
申请日期
1972.05.11
申请人
发明人
分类号
F16J9/14;F16J9/00;F16J9/20;F16J15/16
主分类号
F16J9/14
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代理人
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