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发明名称
Telephone line scanning circuit
摘要
申请公布号
US3073907(A)
申请公布日期
1963.01.15
申请号
US19600013649
申请日期
1960.03.08
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
ALTERMAN MICHAEL E.;IRLAND EDWIN A.
分类号
H04Q3/52
主分类号
H04Q3/52
代理机构
代理人
主权项
地址
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