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发明名称
Perfectionnements aux dispositifs de concentration magnétique pour tubes électroniques et analogues
摘要
申请公布号
FR1251199(A)
申请公布日期
1961.01.13
申请号
FR19600821657
申请日期
1960.03.17
申请人
GENERAL PRECISION, INC.
发明人
分类号
H01J29/68
主分类号
H01J29/68
代理机构
代理人
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地址
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