Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5753871 | Sag resistant, cast acoustical ceiling tile and method for making the same | David B. Bitzan | 1998-05-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5753871 | Sag resistant, cast acoustical ceiling tile and method for making the same | David B. Bitzan | 1998-05-19 |