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经营范围
发明名称
Improvements in or relating to indicators particularly for radio receiving apparatus
摘要
申请公布号
GB495879(A)
申请公布日期
1938.11.22
申请号
GB19370014566
申请日期
1937.05.26
申请人
LAURENCE FRANCIS BIRDSEYE
发明人
分类号
H03J1/04
主分类号
H03J1/04
代理机构
代理人
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