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发明名称
TELEPHONE SYSTEM
摘要
申请公布号
CA433368(A)
申请公布日期
1946.03.05
申请号
CAD433368
申请日期
申请人
AUTOMATIC TELEPHONE AND ELECTRIC COMPANY LIMITED
发明人
OWEN AVIS PEARCE
分类号
主分类号
代理机构
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