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发明名称
摘要
申请公布号
JPS5556986(U)
申请公布日期
1980.04.17
申请号
JP19780139864U
申请日期
1978.10.12
申请人
发明人
分类号
F16L37/22;F16L37/00;F16L37/23;(IPC1-7):F16L37/22
主分类号
F16L37/22
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代理人
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