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经营范围
发明名称
Restricted service arrangements in telephone systems
摘要
申请公布号
US2914616(A)
申请公布日期
1959.11.24
申请号
US19550519083
申请日期
1955.06.30
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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