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发明名称
Electromagnetic transducer for use in deep water
摘要
申请公布号
US3319220(A)
申请公布日期
1967.05.09
申请号
US19650506904
申请日期
1965.10.29
申请人
MASSA DIVISION
发明人
JR. FRANK MASSA,
分类号
B06B1/04;G01S1/72
主分类号
B06B1/04
代理机构
代理人
主权项
地址
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