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发明名称
摘要
申请公布号
JP2608489(B2)
申请公布日期
1997.05.07
申请号
JP19900270224
申请日期
1990.10.08
申请人
发明人
分类号
F16L47/00;(IPC1-7):F16L47/00
主分类号
F16L47/00
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代理人
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地址
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