Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4773194 | Graffiti-resistant ceiling tile | — | 1988-09-27 |
| 4760677 | Suspended ceiling having a concealed suspension grid and lay-in metal panels supported thereon | — | 1988-08-02 |
| 4696141 | Suspended ceiling having a concealed suspension grid and lay-in metal panels supported thereon | — | 1987-09-29 |
| 4611444 | Sanitary acoustical ceiling | — | 1986-09-16 |
| 4549375 | Ceiling construction | — | 1985-10-29 |
| 4537116 | Air drape | — | 1985-08-27 |
| 4439973 | Clip for metal planks | — | 1984-04-03 |