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发明名称
SPEECH TRANSMISSION SYSTEM
摘要
申请公布号
CA419888(A)
申请公布日期
1944.04.25
申请号
CAD419888
申请日期
申请人
BELL TELEPHONE LABORATORIES;WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
MYRON RAYMOND KLEIST
分类号
主分类号
代理机构
代理人
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