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发明名称
ELECTRO-ACOUSTIC TRANSDUCER ASSEMBLY
摘要
申请公布号
GB1501756(A)
申请公布日期
1978.02.22
申请号
GB19750005721
申请日期
1975.02.11
申请人
WEC
发明人
分类号
B06B1/06;G01F1/66;G01N29/14;G01N29/24;(IPC1-7):G01N29/00
主分类号
B06B1/06
代理机构
代理人
主权项
地址
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