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经营范围
发明名称
SWITCHING CIRCUITS
摘要
申请公布号
GB1479164(A)
申请公布日期
1977.07.06
申请号
GB19740044415
申请日期
1974.10.14
申请人
HITACHI LTD
发明人
分类号
H03K5/02;H03K17/60;H03K17/687;H03K19/08;H03K19/0944;(IPC1-7):H03K17/02
主分类号
H03K5/02
代理机构
代理人
主权项
地址
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