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发明名称
TELEPHONE CALL TRANSMITTER DEVICE
摘要
申请公布号
CA423458(A)
申请公布日期
1944.10.24
申请号
CAD423458
申请日期
申请人
BELL TELEPHONE LABORATORIES;WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
CLYDE HERBERT WHEELER
分类号
主分类号
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