Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D637318 | Turf underlayment | Steven Lee Sawyer, Richard R. Runkles | 2011-05-03 |
| 7645501 | Multi-layered sports playing field with a water draining, padding layer | Lewis A. Bowman, Renald W Colonna, Corey D Comperatore | 2010-01-12 |
| 7244477 | Multi-layered sports playing field with a water draining, padding layer | Lewis A. Bowman, Renald W Colonna, Corey D Comperatore | 2007-07-17 |