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发明名称
TELEPHONE EXCHANGE SYSTEM
摘要
申请公布号
CA318924(A)
申请公布日期
1932.01.12
申请号
CAD318924
申请日期
申请人
THE WESTERN ELECTRIC COMPANY
发明人
WARREN WESLEY CARPENTER;JACK FREDERICK DAHL;RICHARD CHURCHILL DAVIS;LINUS E. KITTREDGE
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