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发明名称
Automatic telephone-exchange systems
摘要
申请公布号
US2704785(A)
申请公布日期
1955.03.22
申请号
US19500159321
申请日期
1950.05.01
申请人
TELEPHONE MANUFACTURING COMPANY LIMITED
发明人
JOHNSON BENJAMIN BERTIE;FOSTER WILLIAM GORDON
分类号
H01H67/26;H04Q3/00
主分类号
H01H67/26
代理机构
代理人
主权项
地址
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