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经营范围
发明名称
LOW FREQUENCY SOUND TRANSDUCER.
摘要
申请公布号
EP0162849(A4)
申请公布日期
1988.01.07
申请号
EP19840902394
申请日期
1984.05.29
申请人
GOULD INC.
发明人
SEWELL, JOHN, M.;WERNER, WILLIAM, F.
分类号
H04R15/00;B06B1/08
主分类号
H04R15/00
代理机构
代理人
主权项
地址
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