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发明名称
Perfectionnements aux pompes à vide
摘要
申请公布号
FR1297218(A)
申请公布日期
1962.06.29
申请号
FR19610861897
申请日期
1961.05.16
申请人
COMPAGNIE FRANCAISE THOMSON-HOUSTON
发明人
分类号
F04F9/00
主分类号
F04F9/00
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