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发明名称
Improvements in and relating to speech signal transmission systems
摘要
申请公布号
GB828424(A)
申请公布日期
1960.02.17
申请号
GB19580028430
申请日期
1958.09.04
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
分类号
H04B1/66
主分类号
H04B1/66
代理机构
代理人
主权项
地址
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