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发明名称
Perfectionnements aux dispositifs à décharge électronique
摘要
申请公布号
FR932279(A)
申请公布日期
1948.03.17
申请号
FRD932279
申请日期
1946.08.14
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
FREMLIN JOHN HEAVER
分类号
H01J25/28
主分类号
H01J25/28
代理机构
代理人
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地址
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