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发明名称
Schreibvorrichtung fuer Echolotgeraete
摘要
申请公布号
DE746681(C)
申请公布日期
1945.01.04
申请号
DE1941A092977D
申请日期
1941.02.25
申请人
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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