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经营范围
发明名称
DIRECTIVE RADIO SYSTEM
摘要
申请公布号
CA466746(A)
申请公布日期
1950.07.18
申请号
CAD466746
申请日期
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
EDMOND BRUCE
分类号
主分类号
代理机构
代理人
主权项
地址
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