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发明名称
摘要
申请公布号
JPS5334767(B2)
申请公布日期
1978.09.22
申请号
JP19740127328
申请日期
1974.11.05
申请人
发明人
分类号
F16L9/00;B23K31/00;C21D9/50
主分类号
F16L9/00
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代理人
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地址
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