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经营范围
发明名称
Improvements in or relating to means of communication with submerged vessels
摘要
申请公布号
GB363407(A)
申请公布日期
1931.12.18
申请号
GB19300027933
申请日期
1930.09.18
申请人
SUBMARINE SIGNAL COMPANY
发明人
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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