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发明名称
Electron tube system
摘要
申请公布号
US1916818(A)
申请公布日期
1933.07.04
申请号
US19300445285
申请日期
1930.04.18
申请人
EDWARD H. LOFTIN
发明人
WHITE SIDNEY Y.
分类号
H04B1/16
主分类号
H04B1/16
代理机构
代理人
主权项
地址
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