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经营范围
发明名称
Underwater sound transducer
摘要
申请公布号
GB2087687(A)
申请公布日期
1982.05.26
申请号
GB19810031496
申请日期
1981.10.19
申请人
DEFENCE THE SECRETARY OF STATE FOR
发明人
分类号
B06B1/06;(IPC1-7):H04R1/44;H04R17/00
主分类号
B06B1/06
代理机构
代理人
主权项
地址
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