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发明名称
INTER-OUTER TELEPHONE SYSTEM
摘要
申请公布号
CA372292(A)
申请公布日期
1938.03.08
申请号
CAD372292
申请日期
申请人
THE INTER-OUTER TELEPHONE CORPORATION;HARRY A. RICHARDS
发明人
RICHARD VARLEY
分类号
主分类号
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