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发明名称
Microray vacuum tube
摘要
申请公布号
US1971902(A)
申请公布日期
1934.08.28
申请号
US19320595765
申请日期
1932.02.29
申请人
INTERNATIONAL COMMUNICATIONS LABORATORIES, INC.
发明人
CLAVIER ANDRE G.
分类号
H01J25/72
主分类号
H01J25/72
代理机构
代理人
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地址
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