| 发明名称 |
Sonic transducer surfaces |
| 摘要 |
The faces of transducers for transmitting or receiving sonic signals have outwardly protruding conical shapes to reduce problems caused by reflections of the sonic signals.
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| 申请公布号 |
US4031757(A) |
申请公布日期 |
1977.06.28 |
| 申请号 |
US19750638356 |
申请日期 |
1975.12.08 |
| 申请人 |
J-TEC ASSOCIATES, INCORPORATED |
发明人 |
COLTON, RUSSELL F. |
| 分类号 |
G01F1/32;(IPC1-7):G01F1/32 |
主分类号 |
G01F1/32 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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