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发明名称
摘要
申请公布号
JPS55194(B2)
申请公布日期
1980.01.07
申请号
JP19760091801
申请日期
1976.07.31
申请人
发明人
分类号
F16L21/02;B25B27/00;B25B27/02;F16L21/00
主分类号
F16L21/02
代理机构
代理人
主权项
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