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发明名称
摘要
申请公布号
JPH042840(B2)
申请公布日期
1992.01.21
申请号
JP19860180075
申请日期
1986.08.01
申请人
发明人
分类号
F16L49/00;F16L13/00
主分类号
F16L49/00
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