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发明名称
摘要
申请公布号
FR1551142(A)
申请公布日期
1968.12.27
申请号
FRD1551142
申请日期
1967.10.31
申请人
发明人
分类号
F15B7/00;F15B7/08
主分类号
F15B7/00
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