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发明名称
摘要
申请公布号
JPS5718638(Y2)
申请公布日期
1982.04.19
申请号
JP19770106682U
申请日期
1977.08.11
申请人
发明人
分类号
F16L59/12;C21D1/00;F27D1/12;F27D3/02;(IPC1-7):F27D1/12
主分类号
F16L59/12
代理机构
代理人
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