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发明名称
PIEZOELECTRIC TRANSDUCER ASSEMBLIES AND METHODS OF GENERATING ACOUSTICAL RADIATION PATTERNS
摘要
申请公布号
GB1478068(A)
申请公布日期
1977.06.29
申请号
GB19760045871
申请日期
1974.10.15
申请人
SONTRIX INC
发明人
分类号
B06B1/02;B06B1/06;G10K11/28;H04R1/34;H04R17/00;(IPC1-7):H04R17/10
主分类号
B06B1/02
代理机构
代理人
主权项
地址
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