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经营范围
发明名称
Signaling system
摘要
申请公布号
US2424981(A)
申请公布日期
1947.08.05
申请号
US19430477477
申请日期
1943.02.27
申请人
SUBMARINE SIGNAL COMPANY
发明人
HARRISON BERTRAM M.
分类号
G01S1/72
主分类号
G01S1/72
代理机构
代理人
主权项
地址
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