Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9776921 | Bricks and method of forming bricks with high coal ash content using a press mold machine and variable firing trays | Robert Thomas Belden, George W. Ittmann, Robert W. Ittmann | 2017-10-03 |