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发明名称
摘要
申请公布号
SU362917(A1)
申请公布日期
1972.12.30
申请号
SU19691361882
申请日期
1969.09.03
申请人
发明人
分类号
H02P5/46;E21C27/00;H02P5/00;(IPC1-7):E21C27/00
主分类号
H02P5/46
代理机构
代理人
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