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 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|