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经营范围
发明名称
WIRED CARRIER SIGNALLING
摘要
申请公布号
IE16229(L)
申请公布日期
1941.09.29
申请号
IE19410000051
申请日期
1941.02.07
申请人
STANDARD TELEPHONES CABLES LTD;FRANK FAIRLEY;RAYMOND WALSH.
发明人
分类号
H04H1/08;H04M11/08;(IPC1-7):H04H1/08
主分类号
H04H1/08
代理机构
代理人
主权项
地址
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