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发明名称
Optical system
摘要
申请公布号
US2172775(A)
申请公布日期
1939.09.12
申请号
US19360061138
申请日期
1936.01.28
申请人
TELEFUNKEN GESELLSCHAFT FUR DRAHTLOSE TELEGRAPHIE M. B. H.
发明人
SCHMIDT-OTT HANS DIETRICH;MECHAU EMIL
分类号
H01J29/86;H01J29/89;H04N5/74
主分类号
H01J29/86
代理机构
代理人
主权项
地址
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