Fish sonar
US4651309A · kind A · utility
5Cited by
4References
1Claims
0Family size
Inventor
Key dates
| Filing date | Aug 16, 1985 |
| Grant date | Mar 17, 1987 |
| Priority date | — |
| Expiry date | Aug 16, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/96
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In the fish sonar, the temperature and the hydrogen ion exponent in the sea are recorded or displayed on the recording medium or display of the recording or displaying device with digital echo signals of an ultrasonic wave corresponding to a base line, a school of fish and the bottom in the sea. The fish sonar need not have an exclusive device for measuring temperature and hydrogen ion exponent in the sea.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.