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发明名称
Bearing for vacuum tube work
摘要
申请公布号
US2427203(A)
申请公布日期
1947.09.09
申请号
US19450593747
申请日期
1945.05.14
申请人
FARNSWORTH TELEVISION AND RADIO CORPORATION
发明人
ESSIG SANFORD F.
分类号
H01J21/08;H01J35/10
主分类号
H01J21/08
代理机构
代理人
主权项
地址
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