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发明名称
Light intensity filter system for cathode ray tube devices
摘要
申请公布号
GB642533(A)
申请公布日期
1950.09.06
申请号
GB19460020238
申请日期
1946.07.06
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
分类号
G01S7/06;H01J29/89
主分类号
G01S7/06
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代理人
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