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发明名称
PERMEATION TYPE ELECTRON MICROSCOPE
摘要
申请公布号
JPH03246861(A)
申请公布日期
1991.11.05
申请号
JP19900042834
申请日期
1990.02.23
申请人
NEC CORP
发明人
KAMESHIMA YASUBUMI
分类号
H01J37/20;H01J37/22;H01J37/26
主分类号
H01J37/20
代理机构
代理人
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地址
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