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发明名称
摘要
申请公布号
JPS5424721(U)
申请公布日期
1979.02.17
申请号
JP19770099771U
申请日期
1977.07.21
申请人
发明人
分类号
F16L33/22;F16L37/00;F16L37/08;F16L37/12;(IPC1-7):F16L37/08
主分类号
F16L33/22
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