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发明名称
Perfectionnements aux écrans de projection en général, et en particulier à ceux des microscopes électroniques
摘要
申请公布号
FR948342(A)
申请公布日期
1949.07.28
申请号
FRD948342
申请日期
1947.06.25
申请人
COMPAGNIE FRANCAISE THOMSON-HOUSTON
发明人
分类号
H01J37/22
主分类号
H01J37/22
代理机构
代理人
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地址
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