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发明名称
摘要
申请公布号
JPH04105291(U)
申请公布日期
1992.09.10
申请号
JP19910013214U
申请日期
1991.02.15
申请人
发明人
分类号
F16L21/02;F16L21/08;(IPC1-7):F16L21/08
主分类号
F16L21/02
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代理人
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