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发明名称
Anordning til Afsendelse eller Modtagelse i bestemt Retning af Lydbølger.
摘要
申请公布号
DK45319(C)
申请公布日期
1932.02.29
申请号
DKD45319
申请日期
1929.10.02
申请人
SUBMARINE SIGNAL COMPANY
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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