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发明名称
摘要
申请公布号
JPS49139625(U)
申请公布日期
1974.12.02
申请号
JP19730035321U
申请日期
1973.03.23
申请人
发明人
分类号
F16K31/34;(IPC1-7):F16K31/34
主分类号
F16K31/34
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代理人
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地址
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