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发明名称
Perfectionnements aux vannes pour ultra-vide
摘要
申请公布号
FR1318759(A)
申请公布日期
1963.02.22
申请号
FR19620884502
申请日期
1962.01.11
申请人
COMPAGNIE FRANCAISE THOMSON-HOUSTON
发明人
分类号
F16K3/20;F16K51/02
主分类号
F16K3/20
代理机构
代理人
主权项
地址
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