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经营范围
发明名称
A LOW FREQUENCY OSCILLATOR
摘要
申请公布号
GB1286372(A)
申请公布日期
1972.08.23
申请号
GB19700011412
申请日期
1970.03.10
申请人
HITACHI LIMITED
发明人
分类号
H02P23/10;H03K3/282;H03K3/352
主分类号
H02P23/10
代理机构
代理人
主权项
地址
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