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发明名称
Electrical switching devices
摘要
申请公布号
US2849568(A)
申请公布日期
1958.08.26
申请号
US19540425515
申请日期
1954.04.26
申请人
BRITISH TELECOMMUNICATIONS RESEARCH LIMITED
发明人
GAITE HAROLD D.
分类号
H04L12/06
主分类号
H04L12/06
代理机构
代理人
主权项
地址
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