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发明名称
TELEPHONE SYSTEM
摘要
申请公布号
CA398569(A)
申请公布日期
1941.08.12
申请号
CAD398569
申请日期
申请人
AUTOMATIC TELEPHONE AND ELECTRIC COMPANY LIMITED
发明人
JOHN WILLIAM MCCLEW;OWEN AVIS PEARCE
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主分类号
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代理人
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