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发明名称
TRANSMITTERS AND SYSTEMS FOR TONE-IN-BAND TRANSMISSION
摘要
申请公布号
GB2168223(A)
申请公布日期
1986.06.11
申请号
GB19850027307
申请日期
1985.11.06
申请人
* NATIONAL RESEARCH DEVELOPMENT CORPORATION
发明人
JOSEPH PETER * MCGEEHAN;ANDREW * BATEMAN
分类号
H04Q1/446;(IPC1-7):H04J1/02
主分类号
H04Q1/446
代理机构
代理人
主权项
地址
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