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经营范围
发明名称
Radio tube mount
摘要
申请公布号
US2118668(A)
申请公布日期
1938.05.24
申请号
US19370170546
申请日期
1937.10.23
申请人
HYGRADE SYLVANIA CORPORATION
发明人
GAUN HARRY M.
分类号
H01J19/42
主分类号
H01J19/42
代理机构
代理人
主权项
地址
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