Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7254924 | solar reflective ventilated translucent blocks | — | 2007-08-14 |
| 7150133 | Ventilated plastic blocks with film laminate | Erick J. Felsch | 2006-12-19 |
| 6988341 | Ventilated interlocking translucent blocks | — | 2006-01-24 |
| 5836125 | Interlocking translucent blocks | — | 1998-11-17 |