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经营范围
发明名称
Ionic vacuum pump
摘要
申请公布号
US2925214(A)
申请公布日期
1960.02.16
申请号
US19560574309
申请日期
1956.03.27
申请人
GENERAL ELECTRIC COMPANY
发明人
GUREWITSCH ANATOLE M.;POLLOCK HERBERT C.
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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