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发明名称
Fabrication des tubes électroniques
摘要
申请公布号
FR939112(A)
申请公布日期
1948.11.04
申请号
FRD939112
申请日期
1946.04.03
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
POWERS STEPHEN JOHN
分类号
H01J9/32
主分类号
H01J9/32
代理机构
代理人
主权项
地址
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