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经营范围
发明名称
Improvements in electrical valve oscillators
摘要
申请公布号
GB659450(A)
申请公布日期
1951.10.24
申请号
GB19490009614
申请日期
1949.04.08
申请人
PHILIPS ELECTRICAL LIMITED
发明人
分类号
H03B5/26
主分类号
H03B5/26
代理机构
代理人
主权项
地址
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