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摘要
申请公布号
US2852594(A)
申请公布日期
1958.09.16
申请号
US19560586628
申请日期
1956.05.22
申请人
AMAND FRANK R
发明人
AMAND FRANK R.
分类号
H01J5/12;H01J19/66;H01R33/975
主分类号
H01J5/12
代理机构
代理人
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