发明名称 Electro-acoustic transducer means
摘要 An electro-acoustic transducer has a planar annular diaphragm suspended at both the inner and outer periphery. The transducer component is situated within the inner periphery and interacts with the diaphragm via outwardly extending connections.
申请公布号 US4379951(A) 申请公布日期 1983.04.12
申请号 US19790094082 申请日期 1979.11.14
申请人 GABR, SAAD Z. M. 发明人 GABR, SAAD Z. M.
分类号 H04N5/64;H04R1/22;H04R1/28;H04R3/00;H04R3/04;H04R7/06;H04R7/18;H04R9/04;H04R9/06;(IPC1-7):H04R7/02;H04R9/02 主分类号 H04N5/64
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