Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9259004 | Method of improving grass quality | Lawrence H. NORTON, David R. SPAK | 2016-02-16 |
| 8921269 | Composition and system for turf maintenance | Richard Rees, Ed Vandenberg | 2014-12-30 |
| 8426343 | Method of improving grass quality | Lawrence H. NORTON, David R. SPAK | 2013-04-23 |
| 8153558 | Method of improving grass quality | Lawrence H. NORTON, David R. SPAK | 2012-04-10 |
| 5133891 | Treatment of plants for frost protection | Garland G. Barr | 1992-07-28 |