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发明名称
Improvements in radio-gramophones
摘要
申请公布号
GB539492(A)
申请公布日期
1941.09.12
申请号
GB19400004565
申请日期
1940.03.11
申请人
PHILIPS LAMPS LIMITED
发明人
分类号
G11B31/00;G11B33/06
主分类号
G11B31/00
代理机构
代理人
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