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发明名称
摘要
申请公布号
JPH0253588(U)
申请公布日期
1990.04.18
申请号
JP19880132462U
申请日期
1988.10.11
申请人
发明人
分类号
F16L3/22;F16B5/12;F16L3/223;(IPC1-7):F16L3/22
主分类号
F16L3/22
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