Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5744230 | Microbial acoustical tiles | — | 1998-04-28 |
| 4452698 | Rigid filter plate and process for manufacture of the same | Robert L. Roberts | 1984-06-05 |
| 4381998 | Rigid filter plate and process for manufacture of the same | Robert L. Roberts | 1983-05-03 |