Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6484652 | Soil constituent sensor and precision agrichemical delivery system and method | — | 2002-11-26 |
| 6138590 | Soil constituent sensor and precision agrichemical delivery system and method | — | 2000-10-31 |
| 5673637 | Soil constituent sensor and precision agrichemical delivery system and method | Sylvia A. M. Colburn | 1997-10-07 |
| 5033397 | Soil chemical sensor and precision agricultural chemical delivery system and method | — | 1991-07-23 |