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发明名称
摘要
申请公布号
JPS5458623(U)
申请公布日期
1979.04.23
申请号
JP19770132283U
申请日期
1977.09.30
申请人
发明人
分类号
F16L21/02;(IPC1-7):F16L21/02
主分类号
F16L21/02
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代理人
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地址
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