Issued Patents 2011
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7998300 | Apparatus and method for producing waterproof structural corrugated paperboard | Michael B. Hladilek | 2011-08-16 |
| 7922954 | Building wall panels of hollow core construction | — | 2011-04-12 |
| 7896999 | Method of forming open core web elements | Michael B. Hladilek, David G. Flessert | 2011-03-01 |
| 7866103 | Building wall panels of hollow core construction | — | 2011-01-11 |