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发明名称
摘要
申请公布号
JPS4729919(U)
申请公布日期
1972.12.05
申请号
JP19710034697U
申请日期
1971.04.28
申请人
发明人
分类号
F16K1/44;F16K1/52;G05D7/00;(IPC1-7):F16K1/52
主分类号
F16K1/44
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