Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6616804 | Durable acoustical panel and method of making the same | Robert E. Foster, Larry R. Parks, James Lokey, John Janczura, Robert G. Ganse +2 more | 2003-09-09 |
| 5231810 | Ceiling board aperture | Walter Chamberlain, Donald F. Claussen | 1993-08-03 |