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发明名称
摘要
申请公布号
JPS4712175(Y1)
申请公布日期
1972.05.06
申请号
JP19690005051U
申请日期
1969.01.22
申请人
发明人
分类号
(IPC1-7):F04B21/00;F16K37/00;F17D5/00
主分类号
(IPC1-7):F04B21/00
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