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发明名称
Sonar trainer
摘要
申请公布号
US2918650(A)
申请公布日期
1959.12.22
申请号
US19550537909
申请日期
1955.09.23
申请人
CARRUTHERS WALTER W;KIRKPATRICK CLAUDE L
发明人
CARRUTHERS WALTER W.;KIRKPATRICK CLAUDE L.
分类号
G09B9/56
主分类号
G09B9/56
代理机构
代理人
主权项
地址
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