Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8490352 | Concrete sandwich wall insert | Dan Dugger | 2013-07-23 |
| 8011637 | Concrete form system for low-clearance applications | — | 2011-09-06 |
| 7182308 | Concrete form connecting apparatus | Danny R. Dugger, Dwight E. Hibbs, Launnie Kelmel, James L. Brockman | 2007-02-27 |
| 5759429 | Apparatus for interconnecting concrete forms | Dwight E. Hibbs, James Otto Mittelstadt | 1998-06-02 |