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发明名称
TELEPHONE SYSTEMS
摘要
申请公布号
CA476517(A)
申请公布日期
1951.08.28
申请号
CAD476517
申请日期
申请人
NORTHERN ELECTRIC COMPANY
发明人
IMRE MOLNAR
分类号
主分类号
代理机构
代理人
主权项
地址
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