Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8052986 | System controlling soluble phosphorus | E. Field Selby, John R. Hardee | 2011-11-08 |
| 8029828 | System controlling soluble phosphorus | E. Field Selby, John R. Hardee | 2011-10-04 |
| 7537789 | System controlling soluble phosphorus and nitrates and other nutrients, and a method of using the system | John R. Hardee, E. Field Selby | 2009-05-26 |