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发明名称
PURITY DETECTION APPARATUS FOR COLOUR PICTURE TUBES
摘要
申请公布号
GB1595391(A)
申请公布日期
1981.08.12
申请号
GB19780002713
申请日期
1978.01.23
申请人
HITACHI LTD
发明人
分类号
H01J9/42;H01J9/44;H04N9/28;H04N17/04;(IPC1-7):H01J9/44;H01J31/20
主分类号
H01J9/42
代理机构
代理人
主权项
地址
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