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发明名称
Intercepting trunk
摘要
申请公布号
US2279822(A)
申请公布日期
1942.04.14
申请号
US19400362982
申请日期
1940.10.26
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
HENRY ISRAEL H.;KORN FRANKLIN A.
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
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