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发明名称
Pcm telephone signaling
摘要
申请公布号
US3083267(A)
申请公布日期
1963.03.26
申请号
US19600063737
申请日期
1960.10.20
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
WELLER DAVID C.
分类号
H04J3/12;H04Q11/04
主分类号
H04J3/12
代理机构
代理人
主权项
地址
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