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发明名称
摘要
申请公布号
JPS58103259(U)
申请公布日期
1983.07.13
申请号
JP19810195168U
申请日期
1981.12.29
申请人
发明人
分类号
F16L55/02;E03C1/122;F15D1/02;F16L55/00;(IPC1-7):E03C1/122
主分类号
F16L55/02
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