Gravidity detection method and apparatus
US4111054A · kind A · utility
3Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 22, 1977 |
| Grant date | Sep 5, 1978 |
| Priority date | — |
| Expiry date | Aug 22, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/044
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Ultrasonic detection of early pregnancy in sows and like animals is enhanced by basing an assumption of pregnancy upon detection of a substantially echo-free animal zone of predetermined width or greater which may occur over a substantial range of animal depths, combined with detection of a distinct echo from a greater depth than the echo-free zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.