Fish raising
US4211183A · kind A · utility
40Cited by
6References
22Claims
0Family size
Inventor
Key dates
| Filing date | Mar 2, 1979 |
| Grant date | Jul 8, 1980 |
| Priority date | — |
| Expiry date | Mar 2, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A40/81
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Raising food fish utilizing apparatus including a fish tank having a biological filter submerged in it, by recirculating water through the biological filter to remove ammonia, the water in the fish tank being intermittently recirculated and returned to the tank to add oxygen and the fish periodically being fed until they reach marketable size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.