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发明名称
COMMUNICATION SYSTEMS
摘要
申请公布号
CA478316(A)
申请公布日期
1951.11.06
申请号
CAD478316
申请日期
申请人
FEDERAL TELEPHONE AND RADIO CORPORATION
发明人
LOUIS A. DEROSA
分类号
主分类号
代理机构
代理人
主权项
地址
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