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发明名称
TELEPHONE SYSTEM
摘要
申请公布号
CA377279(A)
申请公布日期
1938.10.25
申请号
CAD377279
申请日期
申请人
AUTOMATIC TELEPHONE AND ELECTRIC COMPANY;AUTOMATIC ELECTRIC COMPANY
发明人
REGINALD TAYLOR;GEORGE THOMAS BAKER
分类号
主分类号
代理机构
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