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发明名称
摘要
申请公布号	GB1303207(A)	申请公布日期	1973.01.17
申请号	GB19710038355	申请日期	1971.08.16
申请人		发明人
分类号	H02H7/20;H03F1/54;(IPC1-7):H02H7/20	主分类号	H02H7/20
代理机构		代理人
主权项
地址

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