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发明名称
Electron microscope focusing device
摘要
申请公布号
US2626358(A)
申请公布日期
1953.01.20
申请号
US19490109840
申请日期
1949.08.12
申请人
CANAL INDUSTRIAL COMPANY
发明人
MERYMAN HAROLD T.
分类号
H01J37/04;H01J37/21
主分类号
H01J37/04
代理机构
代理人
主权项
地址
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