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发明名称
Line switching systems
摘要
申请公布号
US2927968(A)
申请公布日期
1960.03.08
申请号
US19580730088
申请日期
1958.04.22
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
JR. BRYCE BLAKELY,
分类号
H04J3/17
主分类号
H04J3/17
代理机构
代理人
主权项
地址
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