| 发明名称 |
UNDERWATER CAMERA WITH ULTRASONIC RANGE FINDER |
| 摘要 |
<p>UNDERWATER CAMERA The specification describes an underwater camera provided with a pressure-tight housing and an automatic shutter release mechanism, which releases the shutter of the camera at predetermined distances from the sea bed. The automatic release mechanism is ultrasonically operated by means of pressure-tight electric bushings and an electroacoustic transducer.</p> |
| 申请公布号 |
CA1068966(A) |
申请公布日期 |
1979.12.31 |
| 申请号 |
CA19770287585 |
申请日期 |
1977.09.27 |
| 申请人 |
PREUSSAG AKTIENGESELLSCHAFT |
发明人 |
WINNACKER, HELMUT;DIERSSEN, HANS-JUERGEN |
| 分类号 |
G03B17/08;G03B17/38;(IPC1-7):03B17/08 |
主分类号 |
G03B17/08 |
| 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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