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发明名称
摘要
申请公布号
JPS4858597(A)
申请公布日期
1973.08.16
申请号
JP19720089639
申请日期
1972.09.08
申请人
发明人
分类号
F16K31/70;B63C11/02;B63C11/24;B63C11/28;B63C11/34
主分类号
F16K31/70
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代理人
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