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发明名称
摘要
申请公布号
JPH0628454(U)
申请公布日期
1994.04.15
申请号
JP19920069361U
申请日期
1992.09.08
申请人
发明人
分类号
E04G21/18;F16L1/024;(IPC1-7):F16L1/024
主分类号
E04G21/18
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