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经营范围
发明名称
SECRECY COMMUNICATION SYSTEM
摘要
申请公布号
CA600743(A)
申请公布日期
1960.06.28
申请号
CAD600743
申请日期
申请人
ZENITH RADIO CORPORATION
发明人
WALTER S. DRUZ
分类号
主分类号
代理机构
代理人
主权项
地址
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