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发明名称
摘要
申请公布号
JPH0413891(U)
申请公布日期
1992.02.04
申请号
JP19900054243U
申请日期
1990.05.24
申请人
发明人
分类号
F16L33/20;(IPC1-7):F16L33/20
主分类号
F16L33/20
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代理人
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地址
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