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发明名称
Gaseous conduction device
摘要
申请公布号
US2747121(A)
申请公布日期
1956.05.22
申请号
US19530369799
申请日期
1953.07.23
申请人
GERA CORPORATION
发明人
SILVER MARVIN N.
分类号
H01J3/02;H01J17/32
主分类号
H01J3/02
代理机构
代理人
主权项
地址
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