Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7645501 | Multi-layered sports playing field with a water draining, padding layer | Daniel C. Sawyer, Lewis A. Bowman, Corey D Comperatore | 2010-01-12 |
| 7244477 | Multi-layered sports playing field with a water draining, padding layer | Daniel C. Sawyer, Lewis A. Bowman, Corey D Comperatore | 2007-07-17 |