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发明名称
THERMIONIC DEVICE
摘要
申请公布号
CA411295(A)
申请公布日期
1943.03.23
申请号
CAD411295
申请日期
申请人
KEMET LABORATORIES COMPANY INC.
发明人
JAMES A. HOLLADAY
分类号
主分类号
代理机构
代理人
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地址
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