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经营范围
发明名称
Thermal compensating grid frame
摘要
申请公布号
US2832911(A)
申请公布日期
1958.04.29
申请号
US19540432750
申请日期
1954.05.27
申请人
GENERAL ELECTRIC COMPANY
发明人
VELZER HARRY L. VAN
分类号
H01J29/80;H01J31/20
主分类号
H01J29/80
代理机构
代理人
主权项
地址
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