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发明名称
TELEPHONE SYSTEM
摘要
申请公布号
CA429043(A)
申请公布日期
1945.07.24
申请号
CAD429043
申请日期
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED;BELL TELEPHONE LABORATORIES
发明人
WILLIAM HENRY TOWNE HOLDEN
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主分类号
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