| 发明名称 |
ANORDNING FOR AKUSTISK AVSTANDSMETNING |
| 摘要 |
An acoustic transducer is connected to an electronically controllable time-dependent conductance so that energy may be rapidly applied to and extracted from the transducer and associated circuitry. |
| 申请公布号 |
SE8402020(D0) |
申请公布日期 |
1984.04.11 |
| 申请号 |
SE19840002020 |
申请日期 |
1984.04.11 |
| 申请人 |
AMERICAN TELEPHONE AND TELEGRAPH COMPANY |
发明人 |
G L * MILLER |
| 分类号 |
G01S15/08;G01H11/06;G01S7/524 |
主分类号 |
G01S15/08 |
| 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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