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发明名称
摘要
申请公布号
JPH043193(U)
申请公布日期
1992.01.13
申请号
JP19900043851U
申请日期
1990.04.24
申请人
发明人
分类号
E03C1/044;F16L43/02;(IPC1-7):F16L43/02
主分类号
E03C1/044
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