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发明名称
TELEPHONE LINE ACCESS CONTROL
摘要
申请公布号
EP0228439(B1)
申请公布日期
1992.03.04
申请号
EP19860904253
申请日期
1986.06.25
申请人
NEWELL, TERENCE, JOHN
发明人
NEWELL, TERENCE, JOHN
分类号
H04M1/66;H04M1/673
主分类号
H04M1/66
代理机构
代理人
主权项
地址
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