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经营范围
发明名称
DIGITAL TELEFONSENTRAL.
摘要
申请公布号
NO810571(A)
申请公布日期
1981.08.21
申请号
NO19810000571
申请日期
1981.02.19
申请人
PLESSEY OVERSEAS LTD,
发明人
HARRIS, WILLIAM GEOFFREY,;MASON, STUART JOHN,
分类号
H04Q11/04;(IPC1-7):H04Q/
主分类号
H04Q11/04
代理机构
代理人
主权项
地址
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