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发明名称
Recognition of a voltage polarity reversal
摘要
申请公布号
GB9921595(D0)
申请公布日期
1999.11.17
申请号
GB19990021595
申请日期
1999.09.13
申请人
SIEMENS AKTIENGESELLSHAFT
发明人
分类号
H03K5/1536;H04M1/57;H04M1/82
主分类号
H03K5/1536
代理机构
代理人
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