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发明名称
摘要
申请公布号
SU486176(A1)
申请公布日期
1975.09.30
申请号
SU19731947831
申请日期
1973.07.23
申请人
发明人
分类号
F16K17/04;(IPC1-7):F16K17/04
主分类号
F16K17/04
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