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发明名称
摘要
申请公布号
FR2049894(A5)
申请公布日期
1971.03.26
申请号
FR19700020473
申请日期
1970.06.03
申请人
SERVI
发明人
分类号
F16K11/20;(IPC1-7):F16K11/00
主分类号
F16K11/20
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代理人
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