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发明名称
BRIDGE OBSTRUCTION MARKER FOR RADAR NAVIGATION
摘要
申请公布号
CA541996(A)
申请公布日期
1957.06.04
申请号
CAD541996
申请日期
申请人
SPERRY RAND CORPORATION
发明人
SEYMOUR B. COHN
分类号
主分类号
代理机构
代理人
主权项
地址
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