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发明名称
Balance unbalance interface
摘要
申请公布号
GB2243038(A)
申请公布日期
1991.10.16
申请号
GB19910006645
申请日期
1991.03.28
申请人
* BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY
发明人
RICHARD JOHN * SWAIN
分类号
H03H7/42
主分类号
H03H7/42
代理机构
代理人
主权项
地址
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