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发明名称
ELECTRON TUBE RELAY
摘要
申请公布号
CA455542(A)
申请公布日期
1949.03.29
申请号
CAD455542
申请日期
申请人
METALS AND CONTROLS CORPORATION
发明人
JOHN O. MOORHEAD
分类号
主分类号
代理机构
代理人
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