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发明名称
摘要
申请公布号
JPS5280118(U)
申请公布日期
1977.06.15
申请号
JP19750168322U
申请日期
1975.12.12
申请人
发明人
分类号
F16L21/00;(IPC1-7):F16L21/00
主分类号
F16L21/00
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代理人
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地址
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