Irrigation control system
US4396149A · kind A · utility
152Cited by
27References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 30, 1980 |
| Grant date | Aug 2, 1983 |
| Priority date | — |
| Expiry date | Dec 30, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/189
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Irrigation control apparatus includes a mast or masts, a soil moisture sensor or sensors associated with a lower portion of each mast, data transmission apparatus associated with an upper portion of each mast to transmit data continuously measured by the sensor, and circuitry to process that transmitted data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.