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发明名称
摘要
申请公布号
SU456114(A1)
申请公布日期
1975.01.05
申请号
SU19721810998
申请日期
1972.07.10
申请人
发明人
分类号
F16K31/10;(IPC1-7):F16K31/10
主分类号
F16K31/10
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代理人
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地址
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