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发明名称
摘要
申请公布号
GB1290228(A)
申请公布日期
1972.09.20
申请号
GBD1290228
申请日期
1970.03.11
申请人
发明人
分类号
H02M7/155
主分类号
H02M7/155
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代理人
主权项
地址
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