Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7832705 | Grade bracket for use in concrete form system | Derrel Spencer | 2010-11-16 |
| 7780894 | System for defining openings in tilt-up walls | Derrel Spencer | 2010-08-24 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7832705 | Grade bracket for use in concrete form system | Derrel Spencer | 2010-11-16 |
| 7780894 | System for defining openings in tilt-up walls | Derrel Spencer | 2010-08-24 |