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经营范围
发明名称
Improved electronic tube oscillator circuit particularly for acoustic devices
摘要
申请公布号
GB727040(A)
申请公布日期
1955.03.30
申请号
GB19520009250
申请日期
1952.04.10
申请人
SIEGFRIED MAGER
发明人
分类号
G10H5/02
主分类号
G10H5/02
代理机构
代理人
主权项
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