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发明名称
Method of and apparatus for producing radio tube grids
摘要
申请公布号
US2064169(A)
申请公布日期
1936.12.15
申请号
US19360057444
申请日期
1936.01.03
申请人
SOVEREING MACHINERY COMPANY
发明人
KERSHAW HENRY
分类号
H01J19/00
主分类号
H01J19/00
代理机构
代理人
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