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发明名称
TELEPHONE SYSTEM
摘要
申请公布号
CA394866(A)
申请公布日期
1941.02.25
申请号
CAD394866
申请日期
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
FREDERICK JOHN SCUDDER
分类号
主分类号
代理机构
代理人
主权项
地址
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