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发明名称
Amplifying relay system
摘要
申请公布号
US2129710(A)
申请公布日期
1938.09.13
申请号
US19340736750
申请日期
1934.07.24
申请人
WILLIAM H. WOODIN, JR.
发明人
SOLLER WALTER
分类号
H01J21/18;H01J25/78
主分类号
H01J21/18
代理机构
代理人
主权项
地址
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