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发明名称
Toll switching telephone system
摘要
申请公布号
US2801286(A)
申请公布日期
1957.07.30
申请号
US19550550386
申请日期
1955.12.01
申请人
GENERAL TELEPHONE LABORATORIES, INCORPORATED
发明人
LOMAX CLARENCE E.
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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