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发明名称
Improvements in or relating to electronic sublimation vacuum pumps
摘要
申请公布号
GB1134232(A)
申请公布日期
1968.11.20
申请号
GB19670046387
申请日期
1966.01.17
申请人
LEWIS DANA HALL
发明人
分类号
H01J7/18;H01J41/16;H01J41/20
主分类号
H01J7/18
代理机构
代理人
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