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发明名称
Ionic vacuum pump device
摘要
申请公布号
US2755014(A)
申请公布日期
1956.07.17
申请号
US19530350964
申请日期
1953.04.24
申请人
GENERAL ELECTRIC COMPANY
发明人
WESTENDORP WILLEM F.;GUREWITSCH ANATOLE M.
分类号
H01J41/16;H01J41/20
主分类号
H01J41/16
代理机构
代理人
主权项
地址
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